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FAQs about Rays, Skates, Guitarfishes... 2
Related Articles:
Saltwater Ray Husbandry
By Adam Blundell, Rays,
Freshwater Stingrays, Wounds Articles,
Sharks, Cartilaginous Fishes,
Related FAQs:
Batoids 1, Batoid Identification,
Batoid Behavior, Batoid
Compatibility, Batoid Selection,
Batoid Systems, Batoid Feeding,
Batoid Disease, Batoid
Reproduction,
Shark, Ray Eggs, Wound Management, Freshwater
Stingrays: FW Stingray
Identification, FW
Stingray Behavior, FW
Stingray Compatibility,
FW Stingray Selection,
FW Stingray Systems, FW
Stingray Feeding, FW
Stingray Disease, FW
Stingray Reproduction, Urobatis jamaicensis | 
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California sting rays, no data of use 1/11/09 Hi
I have 2 California stingrays in a 180 gallon tank. water levels are
fine <...> I've had them for 3 years now but I noticed on the
smallest ray he has 3 tiny black dots on his body. Do you know what this
could be from? Is the water lacking anything? Please help Michelle
<... please send along productive information: Make up of the system,
its history, tankmates, foods/feeding, actual water test results...
Photo/s if you can. Bob Fenner>
California sting rays... Again... Still no data of use, reading 1/15/09
Hi I have 2 California stingrays <Urolophus halleri> in a 180
gallon tank. water levels are fine <Meaningless> I've had them for
3 years now but I noticed on the smallest ray he has 3 tiny black dots
on his body. Do you know what this could be from? <Mmm, could be
stress... you do have a chiller? Natural coloring... perhaps parasitic>
Is the water lacking anything? <How would I, anyone be able to
ascertain this? You've presented no data re... the short answer: Sure,
could be> Please help. Michelle <... please... don't write...
read instead: http://wetwebmedia.com/rays.htm and the linked
files above. Bob Fenner> Steve the ex-croc man vs. the Ray...
about the animal? 9/4/06 Greetings Mr. Fenner, Today is a
tragic day for just about anyone who cares for the planet's animal's
and a grieving family of course. I write today after viewing your
website, and seeing your email address. I want to pose a question about
the animal that took Steve' life, we hear being reported on the news
that this creature is a "Bull Nose" Ray of about 7' across, and I was
curious about the approximate measure of the stinger portion of this
individual's tail? thanks. warmest regards, Zander Z. Van
Draden Zz <Mmm, likely ten to fifteen cm.... do lose these,
regenerate... is actually a "sheath" that covers the poison-secreting
mechanism... Bob Fenner>
Ray barbs regrowing 10/06/06
Dear WWM, As a librarian working in a marine science library I get
lots of questions from the public, one today was "do stingrays
regenerate their barbs if they are "removed"?" <Mmm, the "sheaths"
that fit over the actual barbs do so... and the venom-delivering barb
can if not removed too fully... In public aquariums that use stingrays
for display/petting pools, the barbs are removed to the extreme... and
do not regenerate> Crikey, I was stumped. So I headed for the WWM
site - cos those that keep rays are sure to understand them best- and
I found this little gem about the barb of the ray that got Steve
Irwin "Mmm, likely ten to fifteen cm.... do lose these, regenerate...
is actually a "sheath" that covers the poison-secreting mechanism... Bob
Fenner" I have read lots of conflicting info. about ray barbs. Please
tell me more this about regeneration and about the poison/venom too.
Vicki <Wish I knew of some popular works on these cartilaginous
fishes that would cover this "hot" topic. Cheers, Bob Fenner>
New Yellow Ray Parasites? Incompatible Ray Mix, Disease
6/14/06 Hello, I just got a 5" baby yellow spotted
stingray from a local wholesaler. He was caught off the Florida Keys. I
have a tank with a full grown Cali ray that I added him to. <... not
compatible... one is tropical, the other a cool water species...> He
seems to be doing ok, I got him to eat shrimp and krill. The problem I'm
having is I don't have a QT tank and he was never QT before I got him
and he has some kind of parasites. <Typical... cartilaginous fishes
often have worm and crustacean ectoparasites collected from the wild>
They look like little black flat worms, kinda like a little leech. I
tried to get them off with my fingers, but his back is too slick. I can
see him itching with the sides of his discs. There is around 10 or
so on him. The move like flatworms. What can I add to the tank without
hurting the rays and what can I do to keep them from spreading to my
Cali ray (which I've had since he was a baby without any problems)? The
tank has a deep sand bed, rock and the 2 rays. Thanks <See WWM
re Ray Disease, Ray Systems, Marine Worm Parasitic Disease... Bob
Fenner> Urobatis jamaicensis in captivity
4/25/06 Hello my name is Riley I have read a lot of information
on stingrays. I currently have a P. reticulatus, but I'm
also interested in marine rays I have researched and found
that Urobatis jamaicensis is the most suitable for life in
an aquarium. I searched your site and found no information regarding
this ray other than ("Urobatis jamaicensis (Cuvier 1816), the
Yellow Stingray. Western Atlantic; North Carolina to Venezuela. To
thirty inches wide. Aquarium and Cozumel photos.") I would like to
know the basics and the requirements of this beautiful
animal. <Mmm... you should peruse the article, FAQs on Batoid
fishes...> Such as tank size, <Hundreds to thousands of
gallons... at least twice the width of the intended maximum size, thrice
the length. Height not very important functionally>> eating habits
etc. I would also like to know how to go about purchasing this ray,
what sites or sources carry it. Also what are appropriate tanks
mates? Your help is most appreciated. Thank you for your time!
<Or a referral... to Scott Michael's "Sharks and Rays in Aquariums"...
Bob Fenner> Narcine brasiliensis (Lesser Electric Ray) Care
10/11/05 I have a quick question. <Okay, Adam J with you
tonight.> I was in the Gulf of Mexico off of Florida and caught a
Brazilian electric ray. <Yes, Narcine brasiliensis, very common in
Florida waters.> My wife talked me into bringing it back home to
Arkansas to put in our marine aquarium. I don't have any access to any
annelid worms that he may eat. Do you have any suggestions of where I
can purchase them? <I wood use Google and search for methods of
culturing your own.> Do you know of any other food sources that he
may eat? I've got other marine fish in there from the Gulf, and don't
necessarily want him to eat them, but if it means his survival, that's
ok. <Very unlikely for the ray to pick on fish, in fact it may be
the opposite. Fish such as Marine Angels and Triggers are known to pick
at the skin and eyes of sedentary rays.> I should have gone with my
instincts and let him go. He is pretty small right now. Do you think he
may adapt to any other food? <This ray is one of the most difficult
to keep because of its feeding behaviors. No public or private aquaria
(that I know of) has ever coaxed one into eating prepared foods. However
they have been known to accept a few other types of foods other than
annelid worms such as: Ghost Shrimp (though these are not very
nutritious), Adult Clam Worms (Nereis virens), Lug Worms (Arenicola
cristada) and other small/slow moving crustaceans. As I’m sure you
have gathered this animal is not for the faint at heart. Even public
aquaria who attempt to keep this animal have many difficulties getting
the creature to eat and adapt to captivity. They are also prone to
bacterial infections and parasites such as marine leeches (Branchellion
ravenelli) and straight from the ocean without QT I am willing to bet
there are parasites to be found on your specimen. To be honest it is
best left in the ocean (though DO NOT return it for fear of
contamination) If you do get the animal to eat I would look into vitamin
supplementation as well. And please keep in mind the adult length of
this species at nearly 20”, this animal will eventually need a tank with
a foot print of at least 24” by 60” as an adult. Also for more general
care look into Scott Michaels book, Sharks and Rays. And BE CAREFUL!
This animal can and will emit mild electric shocks.> In His Name,
Pastor Shawn <Adam J.> Re: Lesser Electric Ray 10/12/05
Thank you for your help. <You're welcome.> Yes, I've discovered
their little gift of shock a few times in the Gulf. <That doesn't
sound pleasant.> I'm used to getting shocked as I've been an
electrician for twelve years. I've never gotten to the point where I
like it though. <Doesn't seem like something anyone would ever get
used to.> <<Marina can attest to the truthfulness of his words:
you do get to liking it.>> In His Name, Pastor Shawn <Glad
to have helped, Adam J.> Sting Ray Care 10/4/05
Hi, <Hello, Adam with you tonight.> I Love stingrays and have
had very good luck with California Rays (Urobatis Halleri) <Very neat
temperate species.> and extremely bad luck with a (Taeniura lymna)
Bluespot Ribbontail Ray throughout my aquatic career. <This is not
surprising at all. Often they die within the first week or two of
captive life and rarely accept food. Even when they occasionally accept
food they seem to go on hunger strikes at times and often never resume
feeding. Very rare that this animal is kept successfully long term.
This one is best left in the ocean.> I have been lucky enough to obtain
a baby Bali Bluespotted Stingray (Dasyatis Kuhlii) which is currently
residing in my 50 gallon quarantine tank. <Ahh yes this “look alike”
species is much hardier. Generally they are easily coaxed into taking
frozen fare such as fresh market fish, squid, krill, any meats of a
marine origin really. You should have a fine layer of sand on the
bottom of the tank, at least 3” in which t can bury itself when
threatened. Coarse sand will cause irritation to its smooth skin, which
can lead to bacterial infections and even death. You’ll also
(eventually) need a tank of at least 300 gallons with lots of surface
area and minimal rockwork. Keep in mind that as with all elasmobranchs
this species is sensitive to stray electrical voltages, heavy metals,
and high nitrate levels.> I have tried to search both WetWebMedia and
the web and have not found much information on care about this stingray.
Please help me learn to provide the best possible atmosphere for this
animal. <I also will take this opportunity to plug Scott Michael’s
book “Aquarium Sharks and Rays.” It is filled with tons of good general
information. However I will say that I disagree with many of the listed
tank sizes for some species. I believe all sharks and rays should be
treated to X-large spacious tanks (not closets) or left in the ocean.>
Obsessed Aquarist Dinesh Patolia <Adam J.>
Delayed
reactions to stingray stings 9/24/05 Saw a child who was
stung in the front of the ankle by a stingray 3 weeks ago. He soaked his
foot in hot water, and it got better. About a week later, he started
to get these small dense bumps in the sting area. They continued to
increase in number. About a week ago, he was swimming in a pool and
slightly scraped his forehead and nose. Now those same bumps are
developing in these areas. They itch slightly and are not painful. A few
more come out each day. Any ideas? <Mmm, yes... I would take
this child to his pediatrician, ask for a referral to folks who deal in
such matters... There are two or more components in such stings... some
involve the immediate trauma, venom... others more latent infection...
Bob Fenner> Atlantic Turbo Ray? What? - 09/17/2005 Hi Bob
<Crewmember Sabrina with you this afternoon.> I have an Atlantic
Turbo Ray in my tank I put it in last week it is about 6" in dia.
<First learn what this animal is. Start here: http://www.wetwebmedia.com/rays.htm
. "Atlantic turbo ray" doesn't even come up in a google search. Your
fish store, or their dealer, or their transshipper, has invented this
name, most likely. Find out what the animal is, and be prepared to
return it or give it appropriate living conditions. I do not believe
ANY marine rays collected for the aquarium hobby have adult sizes less
than 18" in dia. This means you'll be needing several hundreds of
gallons for the beast at its adult size.> Two questions are it safe
to keep in my tank and what will it eat. <I know nothing about your
tank, therefore could not even begin to tell you if this mystery ray is
safe in your tank. Assuming this is a Dasyatis species, it should eat
meaty foods, like pieces of fish and shrimp. You may need to get it
started eating with live shrimp. Best to get reading!>
Thanks Edward Demsky <Wishing you well, -Sabrina> Stingray
sting 8/23/05 My husband and I were on vacation in Corpus Christi
Texas and he got stung by a stingray. I took him to the emergency room
and they stuck his foot in hot water, took an x-ray, and gave him some
antibiotics. It is now 2 weeks later and he is still having some pain in
his foot and he is very tired, nauseated, has diarrhea, and sweats a lot
even though he is not hot. Could this be because of the sting? Thank
you, Amber <Amber, Sting Rays have one or more barbed stingers and two
ventrolateral venom containing grooves that are encased in a sheath, so
to speak. When a victim is stung, such as your hubby, the stinger
apparatus then injects a protein based toxin into the wound generally
causing immediate intense pain. The injury may occur without
envenomation since many rays lose or tear off the sheath covering the
venom gland. In your hubby's case, sounds like the gland was
intact. And yes, your hubby's symptoms are included along with others
listed below. Syncope Nausea Vomiting Diarrhea
Diaphoresis Muscle cramps Abdominal pain Seizures, and
Hypotension Have hubby keep taking his antibiotics as the doctor
prescribed. Hope he is feeling fine soon. James (Salty Dog)>
Stingray Questions - 08/21/2005 Hello, I was wondering if you
could answer some questions about stingrays for me. <We'll certainly
try our best!> I saw some the other day and was very intrigued by
them, I can't seem to find out what species it was though! I have
scoured the internet and came to your site. <Ahh, welcome. Much,
MUCH information to be had here....> The ones I saw had a blunt nose
and ranged in color from dark to light grey. <Far too many
possibilities to even begin to guess. Have you seen here: http://www.wetwebmedia.com/rays.htm
? > I was also wondering what kind of tank and accommodations they
would need to keep one (or more) as a pet. <Some in-depth research
will be required of you, here.... As they are Elasmobranchs, they are
dramatically sensitive to metals, electric current.... Water quality
must never be anything but perfect.... And perhaps the most daunting, I
know of no saltwater species available in the hobby that would survive
long in less than several hundreds of gallons (you read that
right!). But as challenging as they are, they are doubly
rewarding. There is far too much information than can be exchanged in a
mere email.... Consider picking up Scott Michael's book, "Sharks and
Rays".... and keep in mind that, in my opinion and the opinions of many
others, his minimum tank size requirements are drastically small....>
I was wondering if you could tell me the different species, hopefully
the one I saw, and maybe some pics? <Take a look at that link I
gave, and also look for the Scott Michael book.> I looked on your
website but haven't had much luck finding anything but will keep
looking. Love the site! <Glad to hear this! I hope you find it to
be a great source of information.> How difficult is it to have a
ray? <Very.> What is the average price of them? <Varies
dramatically.> Thanks so much for your time! Jessica <Mm,
another thought for you, Jessica - have you considered the freshwater
stingrays of genus Potamotrygon? If you are not in California, you
might find these a less expensive, (slightly) less difficult animal to
care for.... But still a very great challenge in animal husbandry, to
be sure! Take a look here: http://www.wetwebmedia.com/FWSubWebIndex/fwstingrays.htm
and elsewhere on the 'net for a great wealth of information. Wishing
you well, -Sabrina> Stingray Questions - II - 08/22/2005
Well I have looked at quiet a few pics and think the one I saw was a bat
ray. <A VERY large, coldwater animal.... If you're ever near
Monterey, CA, do please "meet" the ones at the Monterey Aquarium - they
are in a "touch" pool, and quite friendly. They feel like velvet.>
The only thing is some of them look like the one I saw and some look
totally different! About the freshwater rays though, what is the
smallest species available? <Possibly P. scobina.... 12"-14" in
diameter.... Only needs a couple hundreds of gallons for a pair.>
How sociable are they? <Extremely. Most are.> Is it humane to
have their stingers removed? <Absolutely not.... And the extreme
probability of bacterial infection that usually results from doing so is
highly likely to kill them. Besides, the stinger will be shed/regrown
regularly; removing it is pointless.> Do some people have their
teeth removed? <Not willingly, I'll bet! Oh, you mean the *ray's*
teeth?! No, certainly not! This would undoubtedly end up killing the
animal, and would serve, literally, NO useful purpose. The animals do
not sting or bite with intention unless they are harmed into doing
so. I have handled a number of freshwater rays (even hand fed them!)
with all their teeth and stingers fully intact, and never been shown
anything but interest in whatever food was in my hand. I even observed
one being administered an antibiotic injection (for bacterial infection
from having its stinger covered with a plastic tube!), and the creature
did not even flinch. Step on one, and it'll sting you, sure.> What
is the smallest salt water sting ray? <Available in the
hobby? Possibly the "blue spotted".... at only a little less than a
couple feet in diameter. VERY rarely does this animal survive
collection and handling.... will die shortly after purchase, most
times.> Are there any that live in brackish water? <Some that
venture into brackish water.... Including Dasyatis sabina, the Atlantic
stingray. There is even a colony of this species that is now
generations removed from marine environs and now exists entirely in
freshwater.> Thanks again! Jessica <Wishing you well, -Sabrina>
My newest addition! Misplaced
skate 7/14/05 I acquired my first stingray <Uhh, mistake
number one... this is a skate... family Rajidae> Saturday, July
9th; I have attached a picture of my "Stinger" (my two year old
daughter named him). He is doing wonderfully! I have done a ton
of research online but it is very limited. I have purchased a
few books but have yet to receive them. <Mistake two... too
late> I was wondering if I might ask you a few questions?
1. I bought him at Big Al's Aquarium Superstore, it was described
as a salt water ray converted to fresh water (my guess is because I
am in Florida and fresh water rays are illegal to own, sell,
keep, breed, etc.). Am I to treat and feed him like a true fresh
water ray? <... is not a freshwater species... will be dead soon
if kept in such... Mistake three> 2. I kept the diet that
the store had him on-frozen silversides, krill and
bloodworms. According to some articles I have found he is
considered undernourished (you can see the "dent" between the
eyes). I started with one block of food twice a day but he still
seems hungry so yesterday he got four blocks. Am I in danger of
over feeding! <Nope> 3. Is it a male? I see what I
consider "claspers" at the stinger base. <Me too... I don't have
claspers, but I see these also on the photo> 4. In 900
gallons I keep four koi (2 small/2 med size); four large comets (one
is in the picture); 6-8 feeder goldfish; and Stinger-is there room
for another ray? <... no> I would appreciate ANY advice
you can send my way, I am so fascinated with him and it has only
been a few days! <What can I say, write? This fish is doomed...
of the two hundred or so species of skates, none are strictly
freshwater. Enjoy this animal... while you can. Bob Fenner>
Thank you, Ronny Peltcs | 
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