Red tail sharks
I have three red tail sharks 1is big and the other small, My smaller ones are doing fine but my big is unusually is has a dark coloration nears it gills and for two days it was extremely big and no it is thinner but has a blackish colour by its gills all of my other fish are doing fine except for these one.
<Alas, the symptoms are not very specific for diagnosis...please test overall water chemistry and look for deficiencies. Feed medicated flake food for precaution if you feel it is pathogenic. Anthony Calfo>

Diseased Sharks (Minnows)
Hi sir,
       Sir my silver sharks are losing their tails and skin is tearing apart and as a result inner part of there body which is of white color is visible and they also stop eating. Hurry up as they are dying.
ammonia 0
nitrite 0
temp 26C
ph 7.5
37 gallon
18 fishes in it.
I have used salt and RIDALL.
<Please do a search using the Google search box at http://www.wetwebmedia.com and also do a search on your favorite search engine to find more info on these sharks. Also, check out http://www.wetwebmedia.com/FWSubWebIndex/fwfshparasites.htm to see if there is a description of the disease and treat your sharks accordingly. Ronni>

Re: Ich
Hi sir,
       There was a disease in my tank in which white spots appear on my goldfish lion head and I added a medicine name (RIDALL) plus salt and in seven days white spots disappear. But my silver sharks have white spots on their body and is not going.
Tem 26C
Ph 7.5
Ammonia 0
Nitrite 0
Tank size 37 gallon
Fishes 17
What do I do now? Change of medicine or some thing else? The silver sharks are also loosing there balance.
<Well, you really shouldn’t have goldfish and tropicals mixed together. The temperature your tank is at is perfect for the tropicals but way too warm for the goldfish. But anyway, the disease you described is Ich. I would do a water change and then treat with a different medication. Ick Guard is a good one and so is Maroxy. Ronni>

Diseased Bala Shark
>Hi,
>>Hello!
>I hope you guys can help me!  
>>Me too.
>I have a very sick looking Bala shark and don't know what else to do for it.  
>>That's why we're here.
>Here's the situation:
I have an 18 gallon tank that has been doing very well for about seven months.  I'm using an undergravel filter and have lots of healthy plants in the tank.  
>Current fish in the tank:  
2 Bala sharks (largest one is about 8cm and looking very healthy - the smaller one's sick)
2 Clown loaches (fat and healthy)
1 Bristlenose catfish
2 Serpae tetras
9 black neon tetras
2 male dwarf Gourami
1 female dwarf Gourami
3 gold long-finned Danios
All of these fish seem to be very healthy. But my poor shark:  It started with red streaks on the fins, then progressed to what looks like velvet all over its body and stiff fins.  The shark is still eating well and behaving normally.  I tried using Waterlife Protozin (protozoacide/fungicide) for the four day treatment - half dose because of the loaches.  But it's now a week later and there is no improvement (slightly worse! :-()
>>Right.  Sounds as though he had a primary bacterial infection which left him susceptible to the velvet.  
>I have checked ammonia, nitrate, pH - all is fine.  Temperature is stable at 26 degrees (78 degrees Fahrenheit?)
What else can I do??  Should I try the medication again?
Hoping you can help.  Amanda.
>>Right, well, I would put him in his own hospital tank.  This doesn't need to be large at all, or even a fish tank, per se.  A container that is chemically inert (non-metal), of around 5-10 gallons, that you can put a small heater in would suffice.  Then, I would put him on Melafix or Spectrogram (both broad spectrum antibiotics), with the addition of Kosher (pure) salt at the ratio of 1tsp/gal.  The salt both helps the fish deal with the stress of osmotic pressure and seems to boost the effects of antibiotics.
>>Please search our library here--> http://www.wetwebmedia.com/mardisease.htm for more information, and check these next two links--they're charts on medications, uses, and dosages. here--> http://www.petswarehouse.com/Fishmed3.htm
>>And here--> http://www.petswarehouse.com/Fishmed2.htm
>>Hopefully this is of some help.  Marina

Re: Red Gills  4/17/03
The redness of the gills is on the inside of the gills so I guess they are
ok.<OK>  The tank is a 10 gallon with heater and Whisper 30 filter.  White gravel
with some blue sea glass mixed thru.
I believe the sharks are ok and will transfer them soon.<Glad to hear that they are fine.  If anything changes please feel free to write back!>
Thanks for the response,<No problem!>
Kevin Kirrane<Phil>

Platies & Bala Shark
Hi there,
<Hello!>
I have a 30 gallon tank with 5 platies, 4 tetras, 1 molly and a lobster. The lobster doesn't seem to bother the fish, but he has been known to try and catch them from time to time (when he's getting ready to molt). I know that seems mean, but the pet guy said it would be okay.
<You may find that he will eventually catch one but for now it’s fine.>
Two questions:
(1) My platies tend to hang around the bottom of my tank - ignoring the lobster. They hide near the lobsters hideout, and under plants – very near or even on the bottom. Is this normal?
<Platies are generally a middle water column type fish but it’s not uncommon for them to hang around near the bottom. As long as their fins aren’t clamped and they are showing no signs of disease I wouldn’t worry.>
(2) I lost my Bala shark today. I haven't had much luck with them. I'm starting to get discouraged. I checked my nitrate and ph levels – both fine. The rest of the fish are okay. I came home tonight to the horror of my shark floating upside down - still breathing a little. Am I doing something wrong? Any advice?
<Unfortunately, your system is way too small for a Bala. They can get over a foot in length. In addition to testing Nitrate and pH you should also test Nitrite and Ammonia. Those are the ones to really worry about (don’t discount the others though!) and are common killers of fish in many home aquariums. Another thing I’ve noticed recently is the poor quality of Bala livestock that is available in stores. This didn’t used to be the case but of the three stores (in 2 cities) that I’ve checked recently, there wasn’t a single Bala that I would have even considered bringing home. I have no idea what the cause of this is, it could be poor breeding or handling, or any number of other things. It really makes it tough for the people who are looking to buy healthy livestock. But anyway, for your system I would suggest sticking with what you have and not getting another Bala. If you want something a bit different than what you have, maybe get a few Blackline Penguinfish (often sold as Penguin Tetras). These are a nice active fish with the silver and black coloring but they stay small, under 2”, so you could add several of them without overcrowding your system.>
Thanks!!! Hayley
<You're welcome! Ronni>
PS Cool Web Site!
<Thank you much!!>

Balas Tail-Down
I have three young Balas (3 inches) in a 125-gallon tank with some Corys and some Buenos Aires Tetras. They all have been doing well until today the Balas seem to want to hang around the outlet of one of the Fluval 404 outlets. Also they have seemed in the past, when stationary in the water, to remain level of slightly nose-down. Today when they are not swimming, their tails seem to drop, possibly because
they want to stick their noses into the outlet stream (underwater) or possibly because they are having difficulty remaining level. Ammonia and nitrites are zero. I don't have a nitrates kit.  pH is 8.4 (always that high). Carbonate hardness is 6. Any idea what the trouble could be? They are definitely behaving differently. They still dart around the tank, but when they are stationary, they seem to be in distress. Thanks for your continuing help. Charlie
<Since this is happening to all three of them I would venture to guess it’s something in the water. Are they breathing heavily? Are there any other symptoms? To start with, I would do a partial water change and see if that helps, probably around 20-25%. And do some checking to see if you can get the ph down, that is way high for these types of fish. Go to http://www.wetwebmedia.com and do a search for “lowering ph” to see what you can find out. Ronni>

Re: Balas Tail-Down
Ronni, thanks for your reply.
<Good morning and you’re welcome>
I do know how to lower the pH. I had decided not to fool with it since my tap water is high and I didn't want to risk erratic changes when trying to keep it stable and low. The consensus seemed to be it might be better to leave it high and stable. Should I try to keep it lower?
<I can definitely see the reasoning behind that. I’ve successfully kept tetras and barbs at a pH of 8.2 and it is hard to lower it and keep it low consistently when your tap water is high so yes, go ahead and leave it alone. I was finally able to lower mine a bit by changing the substrate, the tank originally had crushed coral in it and by changing it to crushed granite I was able to drop the pH to 7.8 which is still high but at least a little better.>
The fish are no better today. One seems to be having trouble keeping is tail up (his tail was a little deformed when I bought him--previous injury?—and the other two are not behaving normally, either.
<You know, I was at my LFS yesterday and noticed a tank of Balas that had deformed tails too. Several of them had tails that pointed upwards, some had tails that pointed down, and ones whole body was arched downward. I wonder if it’s something in the breeding now, possibly too much inbreeding like what’s happening to the feeder goldfish?>
I had done a (scheduled) 25% water change before I wrote to you...forgot to mention it. I did a scheduled filter cleaning today. Didn't see any problems there. Water parameters still are as usual--no ammonia or nitrites. Temp fine. Water clear.
<Ah… good.>
All other fish are fine (sensitive Corys, too). One thing, this morning I did notice a small nick in one Bala's tail. I'm not sure it's new but I haven't seen it before. There was a young (new) pictus in the tank. Maybe he has been harassing them at night? I removed him. Seems like the tetras would have been easier prey for him though.
<Was the Pictus quarantined before being added to the tank? And how big is he? It’s possible that he was picking on them and that the Tetras were just too fast for him to catch but the Pictus generally don’t pick on things until they get a little bigger than what is sold in most stores. If he wasn’t quarantined it’s also possible that he carried some disease that the Balas got, they tend to be more sensitive to diseases than many other fish. Are they getting enough vegetable matter in their food? You should have some softer live plants for them to feed on continuously as they are mostly herbivorous. Also, they tend to be sensitive to nitrates in addition to ammonia and nitrites so you may want to get a Nitrates test kit or take a water sample to your LFS and have them test it. Take a look at http://www.wetwebmedia.com/FWSubWebIndex/minnowshks.htm there’s a ton of info on minnow sharks there and you might be able to pinpoint something.>
Should I do another water change today?
<Possibly. Read the above URL and related FAQ’s first and go from there. Ronni>

Sick Bala shark (08/02/03)
<Hi! Ananda here today, with Phil helping out on this one...>
I have recently put a Bala shark into my tank (about 5 days ago) to accompany the previous one I have because I heard they get over stressed sometimes while alone, but I am starting to think it may be getting sick.
<Did you quarantine this fish before you put him into your tank?>
Its nose seems to be pointing down at the bottom of the tank at a fairly steep angle. I looked over all you disease charts and couldn't find any other symptoms matching this. Could the fish still be adjusting to the tank?
<How long has it been head standing? Five days should be sufficient to adjust to new surroundings. This kind of behavior could be indicative of a swim bladder problem, or be something caused by inadequate diet or water quality problems.>
I have a 15 gallon hex aquarium containing
3 small Cherry Barbs
1 male Betta
3 Serpae Tetras
2 Bala sharks (other seems to be fine)
1 rainbow shark
all the rest of the fish seem to be fine
<That makes me think this was something the fish had before you got it... I would pull the sick fish immediately and put him in a quarantine tank. If you're concerned about him getting stressed from being alone in the tank, get a couple of small mirrors and put those against the glass on the outside of the tank. You'll need to do *daily* water changes to keep the water quality good. (And that's going to be particularly important, since the fish's problem could have been caused by poor water quality at the fish store.) Feed all of your fish a good quality food, one that's enriched with extra vitamins.>
is this to many fish to have in a 15 gallon hex?
(I know that this tank is to small to house the 2 balas but they are small and I will be moving them as soon as I get my 55 gallon up)
<I would move the rainbow shark along with the balas. After that, you should be okay. With all the bottom feeders gone from the tank, though, I'd recommend getting a few ghost shrimp -- the clear/white shrimp usually sold as feeders -- to help with the janitorial duties.>
The tank is filtered by a bio-wheel power-filter filter which I have recently replaced the cartridge.
<I generally rinse out the cartridges every week or so, and replace them when it's no longer possible to get all the gunk out of the blue filter material.>
also I recently did a major water change about 2 weeks ago (over 50%) because I read in the book that you should do a major water change every 6 months to a year, is this true and could that be the problem?
<Hmmm. I've never heard of this major water change schedule idea. I do hope you're doing water changes every other week, rather than just every six months... smaller, more frequent water changes are better than less frequent large water changes. --Ananda>
Greg Vanos

Bala Shark
I have recently put a Bala shark into my tank (about 5 days ago) to accompany the previous one I have because I heard they get over stressed sometimes while alone,
<Sometimes>
but I am starting to think it may be getting sick. Its nose seems to be pointing down at the bottom of the tank at a fairly steep angle.
<Also not unnatural, particularly in too-small settings>
I looked over all you disease charts and couldn't find any other symptoms matching this. Could the fish still be adjusting to the tank?
<Yes>
I have a 15 gallon hex aquarium containing
<... this tank is too small for this species... it gets about as long as this aquarium is wide...>
3 small Cherry Barbs
1 male Betta
3 Serpae Tetras
2 Bala sharks (other seems to be fine)
1 rainbow shark
all the rest of the fish seem to be fine
is this to many fish to have in a 15 gallon hex?
<Mmm, just the Bala's should be moved. The Rainbow Shark may go after the Betta in time>
(I know that this tank is to small to house the 2 balas but they are small and I will be moving them as soon as I get my 55 gallon up)
<Ah, good>
The tank is filtered by a bio-wheel power-filter filter which I have recently replaced the cartridge.
also I recently did a major water change about 2 weeks ago (over 50%) because I read in the book that you should do a major water change every 6 months to a year, is this true and could that be the problem?
<Possibly. I would hold off unless it's a dire emergency in doing any more than about a 25% water change... and then use water that was treated and stored for a week or more. Please see here: http://www.wetwebmedia.com/FWSubWebIndex/fwh2ochgs.htm
Bob Fenner>
Greg Vanos

Rainbow Shark woes
Hi! What a great web site! I'll keep this short... over the past 2 weeks I have been fighting Ich.
It was 3 clown loaches that I bought that I did not quarantine that got
sick. I have been a hobbyist ever since I was a kid and I have NEVER had
Ich.  I treated the 20 gallon tank with Nox-Ich, elevated the temp to 82
F and the spots only became worse. I researched web sites and did the
aquarium salt treatment 1 tsp/gallon leaving the water for 5 days.  I
have now lost 10 smaller fish including the loaches. I was sorry to see
them go but my main concern is my 4 year old 6" Rainbow shark.  I
noticed yesterday that he is breathing fast through his mouth (he never
does that) and his scales along his belly appear raised and he appears
bloated. His color also has changed, instead of being dark black; he is
now a grey color. I don't think it's dropsy because I've seen that
before. I did a 50% water change but he still appears to be stressed.
Please help because I will be so upset if I lose him. My filtration is
an Aquaclear 300. Thanks, Liz
<<Dear Liz, do you test your water? I recommend you get it tested for ammonia (should be zero), nitrites (should be zero) and nitrates (as low as possible, between 20-60ppm on average). If nitrates are too high, you need to do a bunch of waterchanges to bring it down. Half the battle is good water quality. The clown loaches are problematic when it comes to ich. They are extremely susceptible. I will assume you removed your carbon from your filter, and it's good that you raised the tank temp to 82 degrees. Keep it stable, though...keep a thermometer in the tank, cuz if your heater is malfunctioning and the temp fluctuates, it could make things worse. Also, the salt treatment takes time to work well, and Time is something you don't have when treating aggressive ich cases. Salt can take up to a couple of weeks to actually be effective. Get the temp up another notch, to 84F, add a respectable ich med, like Quick Cure or Super Ich Cure, and make sure you have adequate circulation. Also, cross your fingers. I hope it's not too late to save your fishy. Keep treating until the spots disappear, even if the medication indicates a two day treatment. Read and follow the instructions for dosage levels. When the spots are gone, do a 50% water change, paying strict attention to the water temperature, and replace your carbon. -Gwen>>

Injury to freshwater shark
Dear WWM Crew...first let me say that I am an amateur so please excuse my very limited knowledge of freshwater species. My husband and I owned an Oscar for the last several years, who sadly passed on recently. In an attempt to repopulate our 30 gal. tank (Oscar was euthanized after trying diligently for one year
to repair a damage swim bladder), we changed the water and slowly added some new freshwater species...we now have a Bala shark, a molly, a catfish, a
"sucker" fish, a crab (who does nothing, but hang around at the top the heater), a huge goldfish, and two other minnow/shark varieties which I have been
unable to identify. The first is small, black with an orange tail (quite aggressive chasing the Bala all around the tank) and the second, which is the subject of
my question email) is silver with blue horizontal streaks and a snout that looks like a traditional shark.  This guy has been shy and skittish since we put
him in the tank (he and the Bala were our first two additions, all the others came later)...about two weeks after a small sore appeared on one side near
the rear of his body.  It looked like an injury and my husband thought that in panic he brushed up against an ornamental rock in the tank. The problem is that
is has been several weeks and it is getting larger and not healing. I have spent a couple hours searching your FAQ, but I fear my inexperience isn't
allowing me to properly identify this problem.  However, some basic info, there does not appear to be anything hanging from the wound, like parasites; he stays in
one area of the tank floating closer to the top.  He seems to be interested in the food, but I don't actually see him eat.  I change the water at least
once a week because I'm having a clouding problem too.  I've tried treating him with Maracyn, but not a complete course because I'm afraid for the crab. I've
also tried the Stress Coat hoping the aloe will help.  I would be grateful for
any guidance you can offer.  Kim
<<Hello. It sounds like you have an iridescent shark with a bacterial infection. You will need to treat him with an antibiotic. Simply remove the crab and put him in a goldfish (or other type) of bowl for a couple of weeks, he will survive nicely, don't worry. You should go to your Local Fish Store, and ask them what they have on their shelves to help with this problem. Some good choices are Super Sulfa, Ampicillin, or even tetracycline. When you go to your LFS, take along a sample of your tank water, and have the LFS test your water for you. Get ammonia, nitrite, and nitrates tested. Ammonia and nitrite should be zero, nitrates should be low, in the 20ppm to 60ppm range for these fish. If your nitrates are too high, lower them with more frequent, partial water changes. How long has your tank been running? Have you changed any filter media lately? Do NOT change your media all at once, you need to stagger it to keep your good bacteria working.
Also, if you can remove the shark to a small hospital tank, it would help greatly, since antibiotics will kill those good ole beneficial bacteria in your filter. Which means re-cycling your tank, which means high ammonia and nitrite problems. A small ten gallon with an Aquaclear Mini filter will do the trick, if you can.  BTW, your other shark, the gray with the red tail, is probably a red-tailed black shark. Also, your sick iridescent shark should be kept in a group, schooling fish will generally be skittish due to the stress of being alone. He will grow to around three feet in length. The 30 gallon you are keeping him in will not keep any large fish for their lifetimes, you will need to trade them in at your LFS when they get to be around 4-5 inches long. Once they get bigger, they become harder to transfer. No, they will not stop growing, they will become ill if not allowed to do so, and die. Just like your Oscar, who obviously got too big for your tank. Oscars grow to 15 inches, and any fish that is not allowed to grow will become stunted, sicken, and die. Please reconsider the fish you have, and please always RESEARCH your fish species before you add them to a small tank! Here is a link for you: http://www.aquariacentral.com/articles/isharks.shtml -Gwen>>

Injury? Freshwater Minnow/Shark
Dear Gwen, Thank you for the advice and information.  I feel very badly that we were not more diligent in understanding the varieties of fish for the size of our
tank.  I guess we incorrectly assumed that our LFS, knowing the size of our tank, would not have recommended such species.  Live and learn.  Thanks again.  Kim  
<<Hey, Kim. Please do not feel badly about past mistakes, they were only mistakes. You now have the chance to learn about new species, and the Internet is also a great place to find help. Try not to depend on fish store help, many stores have under-qualified staff. Not all stores, though. Some are great. I work in a pet store myself and I know some extremely over-qualified people in the industry. What you should do is learn as much as you can on your own, use the google search, and also start asking questions at your local fish stores. Do not be afraid to ask questions! If the employee doesn't know, he/she should be able to direct you to someone who can. Ask specific questions, but take all answers with a grain of salt. Fishkeeping is very subjective. There are many gray areas, not all is black and white. But from asking, you will find out who knows what, and eventually you will find an employee you can trust. Many stores have people who tend to specialize in different areas. For example, our store has a cichlid person  who knows NOTHING about anything but, a goldfish person, one guy who is totally into tetras, three overly-efficient saltwater people, and some general help, etc. No one leaves our store without learning something :P But we have ALL made the mistakes you have made. The great thing about you is that you are willing to do something about it, and act on your new knowledge. You will become a better fishkeeper for it. You would be surprised and saddened if you knew how many people do not :( -Gwen>>

Bala Shark Missing?
We have 3 Bala shark's as well as a few other types.  We have had them for about 2 months now.  Two of the Bala shark's over the last few weeks have
started to stick to each other as they swim around the tank (we just figured they we mating or fighting with one another).  Today however one is
missing!!  We saw the fish around 11am and around 1pm (few hours later) the fish was gone.  We have looked every where.  We have a full cover on the
tank but we still checked all around in the pump, in the filter, looked around the stand (knowing these fish tend to jump) and the shark is no
where!  I have had fish eat other one's in the past but never so fast without leaving a trace.  Does this sound like a mating or fighting issue?
Do you think the other's could have eaten the fish soo fast without any of us noticing?  We are just baffled!  Thanks for any help. Williams Family
>>Dear Williams Family; Sorry to hear of your lost fishie, it is possible he may still turn up alive. I have seen fish burrow into the substrate or beneath decor in order to avoid aggression, though I've never seen a Bala shark do so. You are correct in the fact that these fish jump, they can sail pretty far through the air. If I were you, I would check beneath all other furniture in the room, as he could have flopped quite a distance. What size is the tank? You should keep balas in groups of 5 or more, they will be much better off. Also, keep your nitrates as low as possible with regular partial water changes in order to prevent disease. Good luck, and I hope he was just hiding! -Gwen<<

Bala Shark Spazzing Out
I currently own 1 Bala Shark in a 55 gallon with about 20 or so other community fish ranging from Dwarf Gouramis to a School of 8 Neons.  I bought the Bala about 8 months ago.  He's been real active, zips across the tank, sometimes chases other fish etc..  (I have a full hood, so no jumping)  I have had no problems with him whatsoever.  I bought him at about 3", he's now about 5 1/2" the last week, It was feeding time and I turned on the light.  He was spazzing.  He was zipping across the tank (sometimes upside down) crashing into the walls etc.  He then shot straight up, tried to jump out, hit the hood, dove straight down and buried himself in the 2" gravel at amazing speeds and smashed into the bottom of the tank .
I thought he was dead and was real scared.  I grabbed my net, scooped him up and started moving him through the water
(His gills were still moving) after about 2 minutes, he sort of woke up and went swimming off.  so It's almost as if he knocked himself out.  So anyways, next couple of days he's fine, swimming fast and active, but not crazy or anything.
this morning, I turn on the light for feeding and he's spazzing again, it's very violent and a bit scary and my girlfriend won't even go near the tank when he does it.  He has no discolorations, no white spots, no "hole in the head" no slime on
the skin, nothing unusual at all about him (or any other fish in the tank).  My PH is currently 7.0, heat is running about 81 degrees, I'm running a Penguin 330 dual bio wheel (which is rated for a 70 gallon tank) I do about a 15-20% water change every weekend (and use some water conditioner and ammonia/ammonium conditioner).  As well as vacuum the tank and clean the filter cartridges.  (Feeding them TetraMin flakes and sometimes bloodworms) (the Bala is not skinny and he is eating)  I'm wondering if this is normal? Is he spazzing because he's stressed out for some reason?  Any help or insight would be appreciated.  thanks Rob Gillespie 
>>Rob, what are your ammonia, nitrite, and NITRATE readings? There are a few things that could be bothering your fish. One, aggression from another fish. Two, a parasite. Three, high ammonia/nitrite or nitrate readings. Four, stray current from a broken heater.
Is your pH always at 7.0? What is your tapwater pH? If your tank pH is a lot lower, there could be a problem in the tank with DOC's. Once you have established that your NH3/4, NO2 and NO3 and pH readings are within normal parameters, we can think about other causes, like a parasite. If you think this is the problem, then you will need to treat with a good quality anti-parasitic medication, like Super Ich Cure or Quick Cure. Read the labels, since some fish need to be treated at half dosage.
-Gwen

Erratic Bala Shark?
Hi,  
<Hello>
I have had one Bala Shark for about 6 months now.  It gets along great with all of my other fish which are: 1 angel fish, 2 Cory cats, 1 pleco, 2 mollies, and 11 neon tetras.  About a week ago I noticed that the Bala sharks behavior was even more erratic than usual.  It is almost a hyper behavior.  It doesn't dart from one side of the tank to the other but it does dart around a bit and is overly erratic.
<Some Balas go a bit "nutty" as they become older.  But, it might be some sort of parasite bothering the fish.  My large iridescent sharks had gill parasites and they would suddenly zip back and forth and kind of thrash a bit.>
It used to be calmer than it is now. It is as if it might be stressed about something. It will jerk around like it is excited.  I went ahead and cleaned the tank and did a water change a few days ago.
<Good plan, sometimes just making sure the fish have new fresh water cures them.>
The pH is at 7 and the temp is at 80.  The temp usually stays in between 76-80.  I have a 38 gallon tank and I just bought a 5 gallon as an isolation tank.
<Very Good!!!  An isolation tank is one of the best investments a hobbyist can make.>
I put the Bala in the isolation tank and started treating it with Quick Cure.  Although, I see nothing physically wrong with it except for the unusual behavior.  I've never seen it act like this before.  Do you have any suggestions for me as to what is going on with it?    
Thanks,   Stacy
<Treat with a medicine a little more powerful (be sure to follow the instructions) I would use Maracide or CopperSafe, Use Maracyn-Two, Maracyn, Tetracycline or TriSulfa to prevent secondary infections from bacteria.  Good luck, and make sure the fish seems healthy before releasing it back into the show tank. -Magnus>

Injured Silvertip
Hi there~
I have a baffling mystery. This evening when I was feeding my fish I noticed my [smaller] Silvertip shark had a red dorsal fin. Upon closer view I can clearly see it's filled with blood. None of the other fish were picking with him and he doesn't appear to have any bites out of any of his (I assume a he) fins. This is so disheartening! I removed him from the tank he was in (all the fish in there are semi-aggressive and I didn't want them to start messing with him) and put him in the smaller community tank. There is some swelling on his body around the base of the fin and no blood is oozing out. I can't imagine what happened. None of the rocks are out of place and he hasn't been swimming erratically and bumping into anything. The fin is almost completely upright but I can't help the feeling that it might be broken somehow. He is doing his best to swim and stay upright but I think he is getting tired. He will swim then ride the current and then swim some more. I don't know if he's going to make it but I'd like to try. Two out of six total Silvertips remain. I've had a hard time with these guys. The only thing I have at the moment to treat him with is Bio Coat. I put that in the water of the smaller tank before transferring him. Is there anything I can do?
Some tank history:
60 gallon - 1 Betta, 1 Pleco (brown with spots), 2 Parrots, 2 Black Stripped Silver Dollars, 3 Tiger Barbs, 4 Barbs (Orange), 7 (Forgive me I don't know the name of these guys) clear (as in see through) with neon edging (each one has a different color: pink, green, orange, yellow, blue, purple, and black)...whew, if you know their name that would be great. For now I just call them Mr. [then their color], and 2 Silvertip Sharks. I originally had 2 spotted puffers (yellowish/green, black spots with a white underbelly) but they were very aggressive towards my Silvertips (that's how I lost the first one). Now they have their own 10 gallon.
(2nd) 10 gallon - 1 Pleco (same as above only much darker), 1 Black Skirt, 1 Scissor Tail, 3 Neon Tetras, 4 Goldfish, and a mysterious snail that appeared out of no where. This is the tank I put the injured Silvertip in.
I apologize for the lengthiness of this email. I did search for a possible answer ahead of time...came close but no hits. I am a new fish mommy and love every minute of it. I even managed to nurse one of the Silvertip Sharks back to health after it had gotten picked on by the puffers only to have it die from high Nitrate stress. Very sad!! I don't want to loose another one if I can help it. I truly appreciate you taking the time to read this...trust I have tons more questions but first my wounded fish. Thanks, ~Nad 
<<Hello. What do your nitrates measure in both tanks? Both your tanks seem overstocked to me. Also, neon tetras and goldfish absolutely do NOT belong in the same tank. Way different lifestyles, temp requirements, feeding, pH, etc, there. When any species of fish is kept in the wrong environment, it leads to stress, and eventually, disease. You should try to decide who to keep and who to part with. If you remove the goldfish and return them to your LFS, it would be easier to keep the 10g as a hospital tank where you can treat the shark. You could move the neons etc into the 60g temporarily until the shark is cured. A dose of Melafix or some salt should help him out if the infection is mild. If not, he may need something stronger, like an antibiotic, I can't tell without seeing him. You will need to use good judgment to decide that. Also, please do sufficient water changes in order to keep your nitrates low and your fish healthy! Use your test kits! :) -Gwen>> 

Red Tailed Shark
A few days ago we noticed that our red tailed shark’s bottom lip is protruding grotesquely and is bright red, he is hanging vertically
headfirst at the top of the tank. He obviously is not feeling good. Coincidentally, or maybe not so coincidentally, we have a bacterial
infection running through our angels right now, which has resulted in 7 deaths since Saturday. We are treating them, since Monday, with
Nitrofurazone. Any ideas as to what the problem may be, and should we euthanize him and put him out of his misery? Thanks. Zak Barrett :'(
< Do a 30% water change every day before treatment and make sure the filter is clean and the carbon has been removed . This will make the medication more efficient. You shark does indeed have a bacterial infection and the medication should have some effect. If the mouth does not heal properly then he may not be able to eat. If he survives the treatment watch him to see that he gets enough to eat. If the mouth is damaged beyond repair then put him in a glass and add a couple of Alka-Seltzer tablets. The co2 in the tablets will displace the oxygen in the water and your fish will slowly drown.-Chuck>

FW minnow shark disease
Hello-
I need a little help here. We have a 75 gallon freshwater tank. We have had what I think is an ongoing problem of some sort of disease. I have already had 2 Iridescent Sharks die. They begin to stop eating get really skinny and then just swimming all weird. Top of the tank bottom and middle. I'm a little confused I just don't see why its only the Iridescent Sharks, no one else seems to be showing any signs of disease. The first 2 died within a few days of each other,  now it has been about 3 weeks since we have had any problem and now we have it starting all over again. The tank includes 2 bala sharks, 1 gold shark, 1 silver shark, 1 cigar shark, 2 glass cats, 1 ghost knife, 1 coolie loach, and 2 iridescent. We are running a Aqua Clear 500 and a Aqua tech 20-40. plus 2 Aqua clear 4000 power heads, for under gravel filtration. The tank has been running since June 25th of this year. When we set up the tank we started it with A miracle and a 700 gph pump (little giant). In about
September we noticed a crack in the sump and immediately replaced it with the filtration that is on it now. About 3 weeks the filter crashed we first noticed the first iridescent swimming disoriented, and then he stopped eating, then died, The 2nd one followed shortly there after. We suspect the tank recycled causing stress to induce these deaths. It has now been about a month and we seem to be having the same problem again with another iridescent only this time there seems to be damage and some sort of spot on the top fin. If there is anything you can do to help or maybe give us an idea of what this might be please contact me by e-mail.
< First of all we need to evaluate the overall health of the tank. For that you need to get some testing done. Measure the ammonia and nitrites. They should be zero all the time. Any readings mean that the nitrogenous wastes are not being completely being broken down by the bacteria and you will need to address that. Secondly is get a reading on the total nitrates . They should be less than 25 ppm but some fish may not be able to handle even that high of a reading and you iridescent sharks may fall into that category. They may not die out right but instead succumb to diseases for which they never recover from. The nitrates can be reduced by servicing the filter regularly and by doing weekly water changes. The amount of water is determined by the fish and how they are being kept. For general purposes we usually recommend about 25% per week.-Chuck>
Jamie

Frogs and Bala sharks
I recently began a small semi aggressive community of fish and aquatic frogs (2). After about 2 months, I am experiencing some problems with my tank. The frogs are faring just fine, but I am having problems keeping a Bala shark alive. I have gone through two now. The only other fish in the 2.5gallon tank is a Betta fish and he seemed to get along fine with the balas. I am aware that stress from the 2 albino African clawed frogs could have caused the shark's demise, but I am believe it had something to do with the water quality. It has become cloudy and foamy.  I used spring water that I treated before I put the fish in and I clean the tank monthly, using Aquasafe as a water conditioner.  Recently, the water took on a pungent, stale odor and became cloudy. I tried cleaning the tank and the cloudiness continued. A few days later, the surface of the water started frothing (or foaming) in front of the filter and circulating around the tank.
My first question is: what causes this foaming and what can I do to alleviate it before it kills another of my fish? The 2nd Bala died yesterday 2 days after the foam started and the first one died almost immediately after purchase.
The second question is: Is it wrong to keep those three species together?  Was the stress level too high for the Bala?
My third question is: Even though these are small fish in a small tank with a filter, do I need a larger tank or perhaps an aerator? Thank you for any assistance you can provide. 
Sincerely, Lauren
>>>Hi Lauren,
A few things. First it is generally not wise to keep herps and fish in the same system unless it's properly designed to accommodate them. Especially in such a small system. Second, what kind of filter do you have? When you say you clean the tank monthly, what exactly do you mean? Do you empty it an strip it down? Third, Bala sharks get HUGE, and are active and nervous fish. 2.5 gallons is too small *in the extreme* for this species. Long term, 55 gallon minimum.
Without any other info, my advice would be to get a larger tank for your fish, and leave the frogs in the 2.5. Get a good hang-on BioWheel filter or a canister filter, and DO NOT break the tank down when you clean it. Any filter pads and such need to rinsed in water from the tank to avoid killing the bacteria in the filter.
Jim<<<

FW shark
Hi. I have a small shark about four inches long. He is black with a bluish neon stripe on his side.
<Painted>
Today he looked very thin and he looks pale (grayish) his (or her) eyes seem to be bulging out.
<Good observation, bad sign>
I don't know what's wrong could we be feeding him food that's not good enough we are feeding him Flakes (like for tropical fish) we also have mollies and other small fish in the tank he is very nice to them but he never gets any food (that I see) we have a plant in there also. I don't know what to do! He is usually energetic and swimming all around the tank but now he is just very low in one place. Please mail me back ASAP. Thanks, Lauren
<Mmm, I would try some meatier food... that sinks... look into "sinking pellets" and wafers... and try some frozen/defrosted foods... quick! As per the note above... your fish's health may be impugned by its having been painted (the blue streak)... avoid painted fish. Bob Fenner>

Diamond Shark???
Hi there. I have a question about my diamond shark. I have noticed a white spot in front of his eye. Would you have any idea to what it might be? As far as I can see it is not ick. Your help would be nice.
Thanks Nancy
<Not sure what fish you have, common names being what they are. A Google search of an image of "Diamond Shark" netted no fish. A single spot may or may not be Ick. If you see a second spot or if the fish is "flashing" against the bottom or a rock then I would assume Ick and treat with salt. But without being sure of the type of fish this is I'm not sure salt is the best cure. Some shark-like FW fish are sensitive to high salt levels. Don> 

Bala shark twitching
Hello
We have a 29 gallon tank with one Bala shark, 3 painted tetras, 6 zebras, 1 baby angel, 1 rainbow, 1 gourami, 3 green cobra guppies, 3 red swords and 2 Cory cats.  Problem: Bala has been twitching since we got him 3 weeks now. We never see him eat- flakes so far. Now he is occasionally swimming nose down. Any suggestions?  smiley
<Mmm, try different foods... this minnow shark is social, does like and require larger quarters when it's bigger, but rarely refuses food... Likely it is just unfamiliar with the format you are offering... try some frozen/defrosted meaty foods or live. Bob Fenner>

Bala shark prob., environmental disease/poisoning
My problem is with a Bala shark. I got two sharks about 2 weeks ago. I had been having some water problems, did a big partial change,
<How big?>
added BioSpira, and had water rechecked. Water was better, with the nitrates going from more than 250 to 200, and the nitrites are still high at 12. However, the ammonia is okay at 0.5,
<?! Not okay... should be zero. Do not add livestock to an uncycled system...>
and the buffering is good at 90. My Ph as of today is 7. My last Bala died before I started correcting my problem. The pet store said not to change my water for 4 weeks after adding BioSpira. My problem is this Bala, it has a cloudy eye, is breathing rapidly and color is a bit pale. I fear the worst is going to happen. The other Bala I got is okay. I got these two after my second water check. All other fish, angel fish, catfish, different tetras are all okay. What do I do?
<... Please read here: http://www.wetwebmedia.com/FWSubWebIndex/fwestcycling.htm and the linked files at top. Bob Fenner>