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FAQs on Catfish Identification

Related Articles: CatfishesSucker mouth Cats/Loricariids, Otocinclus, Callichthyids, Ictalurid CatfishesMochokids/Synodontis, Candirus (Trichomycterids, Cetopsids), Marine Catfishes: Plotosids, Ariids

Related Catfish FAQs: General, Behavior, Compatibility, Selection, Systems, Feeding, Disease, Reproduction

Synodontis multipunctatus

Unidentified Catfish, Catfish ID - 06/27/07
Hi, I've been searching sites (Thanks Google) for a while now looking for anything to help identify a recently adopted catfish. So far, your site seems to be the most informative and popular, so here I am.
The new guy (or girl) is approximately 6-7 inches long with barbels extending about the same distance. The general shape is that of a Pictus sp. as far as I can tell. It appears to be "naked" with a light silver body, white belly and 3 poorly defined lateral stripes of black, white and black. The tail fin is forked. I know it would be easier to identify with a picture, but I can't provide one yet.
As far as behavior goes:
It hides under my rock formation and comes out only at night. When he does come out, he taps the front of the tank as if maybe the glass will give way.
I've had him about a week and have yet to see him eat anything. A few freeze dried krill have disappeared after a while in the tank, but since they float I can't be sure it was the catfish that ate them. Other then that I've tried shrimp pellets and "variety wafers" since they sink nicely.
I know some catfish eat the wrong things sometimes when they get hungry and I want to make sure my other fish will be ok.
I have a 55 Gal. with 2 Blue Gouramis, 2 Neon Blue Dwarf Gouramis, 2 Clown Loaches, 5 Platies and 3 Juli Cories. (and the 6 inch cat)
Thank you for any help you can provide. Josh
< Of coarse a picture would be very helpful, so instead check out planetcatfish.com. Check for one of the Mystus cat or Pimelodus species.-Chuck>

Yellow eel tail catfish   6/5/07
Do you have any information on this freshwater aquarium sized fish. it is Australian i have been told.
< Indeed it is Australasian. The yellow-tail eel catfish is a species of Plotosidae, that is, a catfish belonging to the same group as the marine striped catfish that used to be quite common in the trade. The exact species is unknown to me. The name is not recognized by Fishbase or any aquarium book I have, and is only used by a single fish farm's web site and they don't even mention the Latin name! It may possibly be Neosilurus hyrtlii or Neosilurus glencoensis, both of which have been traded as the yellow-finned eel catfish. Anyway, these catfish are all pretty similar, and while there are some dwarf species (15 cm or less) and some giant species (above 90 cm), most are 25-50 cm size bracket. The freshwater species outnumber the marine species, and in terms of water chemistry these freshwater species are not in the least fussy and will adapt to anything suitable for freshwater fish generally.>
> put one in my cichlid tank and lost all of my cichlids. they died one after the other. do you think it would be disease or something to do with the catfish ??? i have kept these cichlids for approx 4 years with no previous problems.
<Well, these catfish are extremely capable predators, and can and will eat anything they can stuff into their mouths. But they are also venomous, being equipped with one or more spines capable of delivering an excruciatingly painful venom. To be fair though, venomous fish rarely if ever use their venoms offensively, so the catfish wouldn't deliberately jam itself against a cichlid intending to kill the cichlid. But depending on the size difference, I suppose it's possible the cichlids tried to eat the catfish, and got stung that way. Regardless, the Plotosidae generally make acceptable tankmates for robust communities. The Plotosidae tend to be more or less gregarious, and at least when not fully grown seem to do best kept in groups. Some species will in fact pine away completely if not kept with companions. As they mature they become less sociable and expect secure hidey-holes, but even adults tend to be found in twos and threes in the wild, so getting a buddy or two for your catfish is probably a very good idea. Hope this helps, Neale>


Re: yellow eel tail catfish  6/6/07
thanks...for prompt reply....
<No problem.>
do you think the catfish has brought in a virus or disease that killed off the rest of my tank as the catfish is the only survivor now. lost rainbow sharks, cichlids and small catfish x2 all dead except the newly arrived catfish
<Seems very unlikely. Viruses tend to be species-specific. Possibly a bacteria, but these tend to affect only certain fish and even in worst-case scenarios the fish get ill gradually and obviously. So you'd notice things like lethargy, loss of colour, dropsy, and so on before fish infected with internal bacteria or parasites actually died. Some fish have a toxic mucous (boxfish for example) but these tend to kill everything, including the boxfish. So I don't think that's likely. If the catfish was simply attacking things at night, you'd expect to see damage on the dead fish -- any sign of that? If you had an electric catfish, explaining the sudden deaths would be easier, too. But assuming you have a genuine eel-tail catfish of some type that's not a possibility either. Obviously you need to check water quality and chemistry. This may be a case of two unrelated events merely connected in time: i.e., you introduced the catfish at the same time your aquarium crashed for one reason or another.>
regards
tom
<A picture of the catfish, and some aquarium stats would be useful: size of the tank, filtration, pH, hardness, nitrite. Cheers, Neale>

Butterfly Catfish, Identification - 07/25/2006 <Sisoridae>
Hello Bob my name is Allan Larkins I am the general manager of creatures great and small in Victoria I have seen several postings for people trying to research butterfly catfish and unfortunately the answer is always the same "did you mean African butterfly fish" but the fish they are trying to research is also known as the Asian moth cat Latin: HARA HARA OR HARA JORDANI.
<Hmm....  I'm thinking you might mean Hara jerdoni, here; seems that H. jordani may be a common misspelling of this name.  Fishbase and PlanetCatfish both seem to lead in that direction.  And thanks for this!  I've never heard this group called "moth" cats.>
Look forward to more great info on your site.
<I will.  I always do.>
Sincerely, Allan
<All the best to you,  -Sabrina>

Shades of Billy Shakespeare! Blue Dolphin Catfish?  12/22/2005
I have just purchased what they called a blind brackish blue dolphin catfish.  Is there such a fish, I can not find him any where.  I have him in a nano tank.  Can you give me any info or place to go for info.  Thanks, Jane
<Mmm, doesn't come up on fishbase.org... I suspect this is a nomen for some species of Cetopsid (whale catfish), or perhaps (my second guess), an ariid... Can you send a likeness/pic? Bob Fenner>

Freshwater: Algae Eater…….of some sort - 10/24/05
Hello there 
<Hello.> 
I have a quick question for you. I have lost 3 algae eaters in the past month. The second one we bought from our local fish store, it died within a few days. The last one that we just bought (from a diff. pet store) lasted for a week. Is there a thing called bad algae that could be killing our poor algae eaters? 
<This is where we run into a problem with common names there are various fish that retailers label as algae eaters. Could be anything from a Chinese Algae Eater (Gyrinocheilos aymonieri) to a Golden Algae Eater (Gyrinocheilos aymorieri), heck I have even seen the common Pleco (Hypostomus punctatus or Liposarcus multiradiatus) labeled as an algae eater. In short if any of these fish keep passing away on you, there is something wrong with the environment: your tank. 
Could be a number of things from poor water quality (ammonia, nitrites, nitrates, temperature, improper pH) to improper acclimation procedure. Keep in mind while these fish do eat algae, all but the largest of tanks cannot provide adequate algae to keep them healthy. You will have to supplement with some type of wafer or pellet composed of vegetable material.>
Sorry not to mention this earlier - this is a fresh water, the water tests fine and its been up for a little over a year. Thanks for helping. Cody
<You're welcome, Adam J.> 

ALBINO CATFISH
Hello, When I was a kid, my dad had an aquarium & pet shop. I loved watching the fish, but not doing the "cleaning & what-not". I still love watching the fish, but not the cleaning.
I have a 20 gal. tank that I think keep pretty clean. The water is always clear, & most of the fish look great! The problems I am having are this: I have an Albino Cat Fish in the tank that is so light colored, it looks almost white. At first, I thought it looked that way because of the light, but now I don't think so as the fish was more of a pink color when I got it. My other cat fish died about a month ago and looked just as white as this one does. Any suggestions on what I should do? Lisa
< Albino fish are actually pretty common in the hobby. Genetically though they seem weaker than their normal colored counterparts. If you are worried then I would check the nitrates. These can creep up over time and cause weak fish to get sick. Up to 25 ppm is fine for most fish , but in your case I would try and keep it under 20.-Chuck>

Black fin FW shark

I supposedly have a black fin shark. I have read on a website that it is
called a Tetra Catfish. Is this true?
< I can only find them listed as Black Finned sharks, but common names are often different in different areas of the country.>
I also need a way too sex it. It is fully black except all around its fins is white, and one or two of its
whiskers is white. (WHISKERS!)
< Your catfish (Pangasius pangasius ) gets huge, around 4 feet long. This fish probably is not sexually mature until it gets at least 2 to 3 feet long.>
Also I have a mud turtle, 5 minnows, and this shark all in a twenty gallon tank, but is only filled about five inches high in water for the turtle. I plan to buy more black fin sharks (AKA Tetra Catfish) so I need a way to tell male from female! Thanks in advance!
< Nothing is known about their sexing or reproductive behavior in the aquarium.-Chuck>

Pleco ID
Where can I find out what type of Pleco I have as it does not seem to match any photos on the net? Can I send you a photo? <The best site for all info covering Plecos is planetcatfish.com. I'd be happy to take a look. Don>
Thanks
Chetna

Ageneiosus marmoratus - "dolphin catfish"?
Hi Mr. Fenner:
<Crewmember Sabrina here for yah this afternoon>
Hope everything is going great for you this holiday season.
<Indeed it is, thank you - I hope all is well for you, as well.>
I am writing to see if you can provide some info as to what is a "dolphin catfish". I did a search online and came up with many links that said a Dolphin catfish is the same as Pseudodoras niger.
<This is what I have found, as well.>
That was a surprise for me but I figured it could be possible.
<Common names for many fish differ greatly depending upon locality, unfortunately.  Latin names are much more sound.>
However, 1 link took me to a website of a Japanese importer where he has pictures of different "dolphin catfishes" and they were all members of the family Ageneiosidae.
<This is a genus of the family Auchenipteridae.  Might want to make use of the inexhaustible PlanetCatfish:  http://www.planetcatfish.com/core/index.htm .  Check out the "Cat-eLog" - I love this site for catfish reference.>
I have been looking for a specific member of the Ageneiosidae family for many years with no success but I have been looking for it under a different name (Marbled Flat-nosed
cat or Marbled slopehead catfish). Is this family of catfish the ones known as Dolphin Catfishes or is it yet a different fish?
<Honestly, I am not familiar with that common name, other than finding it via google searches, etc., and there, like you, I find it in reference to Pseudodoras niger.>
Thank you,
Ivan
PS. Do you have any idea where I could find for sale the Ageneiosus marmoratus or other members of its family?
<I believe I saw this fish once, and only once, at a store called "Jumbo Fish" in Wichita KS - Oh, how I loved that store!  They had some of the most bizarre, impossible-to-find fish....  Rumor has it the place burned down (sob!), but I don't know that for sure (and I hope not!).  I imagine if a store can get hold of it, you can too, with some serious prying and digging.  Check with any local aquarium clubs, check on Planet Catfish's forum, ah, and you might try with http://www.belowwater.com/ as they tend to bring in some mind-blowing fish from South America.  Good luck on the fish-hunt!  Wishing you well,  -Sabrina>

Catfish id
On that specific website the pictures do not match the ones on there it does a bit look like the black one but not really it looks like a bug.  Please help.
<You’ll have to just research until you find the right one and then search for that specific one until you have found the info you desire. I can’t tell you what it is or any info on it because I can’t see it. Ronni>

Catfish id
He is blk and has little tiny hooks that go all the way  down to his tail.
He looks is like mean looking.
<Likely a callichthyid. Please read here re:
http://www.wetwebmedia.com/FWSubWebIndex/callichthyids.htm
Bob Fenner>

Re: Pseudodoras niger or jaguar catfish??
Hey Bob, are these guys related; Pseudodoras niger and Megaladoras irwini??
<Yes... same family... though a genus has changed... Please insert these names in www.fishbase.org and you will learn>
also can u help me.. I am looking for a catfish that I can put in with my African cichlids.. at the moment I have a few synodontis multipunctatus in there and they are all doing fine.... I was wondering could a Pseudodoras niger or jaguar catfish work in that kind of a tank..
<Likely yes... if they start out large enough, with plenty of rock spaces to get away, adequate feeding to initially fit in>
I saw the Pseudodoras at my LFS and the guy told me that they can live in a tank with a ph of up to 7.8 and gh of 25... mine are ph 7.8, kH 12, gh 16.. its 280 gallons.. 96 x 24 x 31 dimensions..
<Mmm, as you'll find by looking at fishbase... these S. American fishes prefer softer, less alkaline water... there are many "native" African choices to consider in their place>
currently I have 8 fish in there.. a Kigoma frontosa (about 3"), Malawi blue dolphin (3" also), a gold Lepidiolamprologus profundicola (4"), 2 Neolamprologus sexfasciatus (2"), 3 synodontis multipunctatus (4").. I plan to get more fish later on, but this is what I have at the moment.. I also plan to get 3 more Mpulungu Malawi blue dolphin.. 4 Mwele orange Altolamprologus compressiceps, 4 Mutondwe gold head Altolamprologus compressiceps, 5 synodontis angelicus, 3 synodontis multipunctatus and also 1 Lepidiolamprologus kendalli.. that's all I have looked into at the moment.. is this a good idea?? If not can yo u recommend any other catfish that would work. I really like how the Pseudodoras looks... its really cool and plus I have the big tank that it requires.. I just got my 280 gallon.. its cycling at the moment.  Please help!
<Do take a read through the family Mochokidae again... there are some nice choices there that are as available as these doradids... and much more appropriate in terms of water quality. Bob Fenner>

Algae eater
please help...
within the last 2 days my algae eater (don't know the scientific name of it, just your run of the mill pet store 1" or smaller algae eater) has developed a very large abdomen...just read that they are scavengers...my other algae eater died about a week ago and has not been replaced...could it be that this one is scavenging so much that he is now eating twice the amount as before?? otherwise he acts perfectly healthy...
please advise and if you can't, is there any link you can provide me with??
ps: what exactly is the name of this algae eater anyway??
<Freshwater? Perhaps the "Chinese" Gyrinocheilus aymonieri... please use the search feature on www.WetWebMedia.com for more possibilities, pix of this species... Need to have more information re your set-up, history, livestock to render meaningful input. Bob Fenner>
thanks, joy

 

 

 



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