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Rays in Hawaii? Batoid ID 7/9/07 What is the difference between a bat ray & an eagle ray? I saw one or the other, today while snorkeling on the Big Island of Hawaii. Aloha, Carole <Hello Carole. A bat ray is, to Americans at least, a single species, Myliobatis californica. It is a member of the eagle ray family Myliobatidae however, so it is technically both *the* bat ray and *an* eagle ray. In British English this species is in fact called the "bat eagle ray" and this is the name under which it is listed in Fishbase and identified by the FAO, though the American Fisheries Society calls it the "bat ray". Eagle rays are a number of different species within the Myliobatidae, such as the spotted eagle ray Aetobatus narinari. Morphologically, there's no difference between the bat ray and an eagle ray beyond those the differentiate them at species level. All have the characteristic big head armed with crushing teeth, all have the same rhomboid shape, all have the whip-like tail. Bottom line: if you can identify your fish as Myliobatis californica, then it's a bat ray, otherwise, simply call it an eagle ray! Stopping by the Fishbase entry for the family will give you some extra information as well as links to photographs of the different species and identification keys. See here: http://www.fishbase.org/Summary/FamilySummary.cfm?Family=Myliobatidae .Hope this helps! Neale> Cortez Stingray. Sting Ray Confusion....Care Issues, ID, parasites... - 05/02/07 I have a couple of questions that i <I> can not seem to find anywhere. <I'll do my best to point you in the right direction there chief.> First I supposedly had Sea of Cortez Stingray but looked nothing like a cortez. <Just to clarify we are talking about Urobatis maculatus, right?> It looked more like a Round Stingray, (California Stingray). Is it possible it was a Cortez? <Well I would suggest using google and comparing pictures, animals are from different locals and in my opinion are shaped nothing alike.> Next question is i <I> seen Copepods are a common parasite does that mean all the copepods on my live rock are going to infect a stingray once i <I>put one in my tank? <There are many different species of copepods, some parasitic though most are not. In general the species you find on liverock are not....now perhaps you meant isopods? That's another story.> I own the Scott Michaels Sharks and Rays book and it said that the Round Stingray water temperature is between 54-72 degrees Fahrenheit. <Yes is a temperate animal.> Could the Round Stingray thrive in my tank that normally gets up to 82 degrees Fahrenheit in the summer? <Absolutely not, oxygen levels are too low. Adam J.> Sting Ray <Rajid> ID
6/18/06 Hi All, <Hello Pat> The following isn't really an
aquarium question, but you've all been very helpful in the past and
I figured I'd take a shot. Last night I went for a late swim (North
Shore, Mass, High Tide at around 2 am) and a walk on the beach. I was
making my way along a concrete path that at the time was about two feet
above the water when I came upon a stingray (thank god I had a
flashlight) laying gills up on the walkway. Said walkway is about two
feet wide and was exposed to splashing waves, which is how I figured
the little guy ended up there, although there were also seagulls around
that may have plucked him from the ocean and dumped him there I guess.
Upon closer inspection I noticed gill movement. Using my shirt as I
sort of glove, I picked him up by the last third of the tail and gave
him a quick look over. He offered some struggle but seemed weak.
Knowing that fish need to be acclimated to water to prevent shock, I
considered carrying him that way to a shallow tide pool to reintroduce
him, but I figured that this method of travel (it would have taken ten
minutes) would do more harm than good so I simply plopped him back into
the water. He seemed stunned for a moment but then swam off. Getting to
my real question here, is there any way I could find out what kind of
ray (or skate) this is? It was over all tan to brown in color, about 18
inches in length and almost the same in width, with the tail being
about the same length as the body. The disc was more diamond shaped,
though less so than I have seen in the Atlantic stingrays occasionally
offered on marine e-tailers. Lastly, I didn't notice any kind of
"sting" on the tail, but it was covered with small spikes,
<<A species of skate... Could see fishbase.org (http://fishbase.sinica.edu.tw/Summary/FamilySummary.cfm?ID=19)
and search re the Rajids of the area, look at pix... Or take a look/see
at Humann/DeLoach's ID works... RMF>> all pointing
towards the rear. Any chance of an IS based on this poor description?
<Pat, might take a look here, see if any of the photos can help you
ID the ray. http://www.wetwebmedia.com/rays.htm Other than
that, I suggest Googling, same as I would have to do. James
(Salty Dog)> <<Googling what James?>> Thanks
as always, <You're welcome> Pat C
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> Ray question Hi Bob, I am looking for some information on a "clear nose" guitarfish/skate. I don't know the scientific name. <Maybe give a go on fishbase.org with the common names> I am trying to see if it would be compatible with my system (600 gallons). I was wondering if you knew the water temperature range for this animal, max size and if there are any reasons that this animal would not do well in captivity. <Mmm, this is at least a handful of species... most all coldwater...> I am also seeking the same information on a stingaree (pretty dark blue with yellow spots), i.e. scientific name, temperature, tank adaptability. I was told it was an Atlantic Ray, but I'm not sure I believe the fish store. <Again, another generic term... 42 species listed on fishbase for this...> Thanks for the great web site, Brian <Need more input to have better output my friend. For such an investment, you would do well to read the new Sharks and Rays book by friend Scott Michael. Bob Fenner> Caught a Skate? Thanks for the reply Bob. Fishbase.org is an excellent reference site. <Yes... a treasure of cooperation...> I'm not 100% convinced that it was one of the two skate species you suggested, by that may in part be due to it being a bit dark at the time.. I guess I was kinda hoping id caught some strange and rare exotic fish, who knows perhaps I did! <Agreed and agreed... there are more fish species to be described... crosses...> Since last email I checked out the rest of your site and your resume and saw that you also breed tropical fish (or at least know a bit on the subject), which is interesting because I actually breed angel fish myself (check out my (kinda dodgy) angel fish breeding site http://users.senet.com.au/~mribbans/pages/angel.htm ) <A very nice "page"... do like your descriptions... e.g. how to sex angels...> Anyway another quick question then I'll leave you alone.. In my girlfriends tank (we have one each) she has two bristle nose catfish but a few months ago they have both slowly changed colour from dark brown to an orangey cream colour. I was wandering if this is normal or whether perhaps we have something that isn't a bristlenose?? <Likely are what they are... Bristlenose Loricariids of some sort... maybe shifting into a reproductive color phase.> Thanks again Bob! Cheers, Mark Ribbans <Be chatting mate. Bob Fenner> What did I catch?? Hi there, I stumbled across your web site and found your email address because I have a question I hope you might be able to answer.. <Okay> A few weeks ago I went on a fishing trip to the Coorong a peninsula which is in SE South Australia. <Yes> Anyway we were chasing mulloway and I hooked on to what I thought was a sting ray but when I pulled it out of the water I saw that it had a shark like tail with small spiky lumps all over it and no barb. It was reddish in colour on the top and white on the bottom and measured probably 90cm across.. <A skate, related to rays...> I think it may have been a skate but if you have any other ideas, some info or perhaps a piccy that would excellent! <Perhaps a Raja lempreiri or R. whitleyi... these are the Skates most common to S.E. Australia. You can see their images on fishbase.org.> Thanks! Mark Adelaide, Australia <Cheers, Bob Fenner> Eagle Ray Hello Sir: <Hello> My daughter is in first grade and has a project about Eagle Rays. She needs to do a flow map describing how the eagle ray looks from birth to adulthood. In addition she has to mention the names it is called. I have looked everywhere but I can't find what are the names for the baby Eagle rays, young and so on. We also need to know how the Eagle Ray adapts to its environment. Can you help us? <Let's see. First off THE eagle ray you are likely concerned with is Aetobatus narinari to science. Go to fishbase.org: http://www.fishbase.org/search.html?server=NRM-Stockholm and insert this scientific name and you will find images, its many names around the world. A more general search on Google with the name "eagle ray" will grant you the rest of the information you seek. Bob Fenner> Thank You, Catherine Brazilian Electric Ray in captivity - 4/15/04 Hello guys, quick question for you. I have a friend who has a 300 gallon tank with a couple of Banded Sharks about 14" long and a couple of tangs. Temp. is set at 78. He just recently added a ray but was not sure what type it was and was getting different information as to the species from different people. I took a look at it and was not having much luck either but I finally came across a picture of the ray on your website and it was described as the 'Brazilian Electric Ray'. A few questions, on the description of this ray it said it was subtropical, is it okay at 78 degrees? <Hmmm...The range of this species, if this is what it really is, is quite extensive. It ranges from Florida/South Carolina throughout the Caribbean and down to Brazil. Tropical temperatures should be fine.> Another question, do you actually need to come in contact with the ray to be shocked or by just simply putting your hand in contact with the water? <Close or direct contact with the ray may cause shock and the shock can be quite severe.> Are the other fish safe with this ray in the tank? Specially the sharks? <The sharks should be fine, but the tangs could become dinner. That all depends on the size of the tangs and the size of the rays. The electric rays (genus Torpedo) that we have worked with are notoriously difficult to get to feed in captivity.> Should any special precautions be taken when putting hands in the water? <Always. Simple as that!> Thanks, information on this ray does not seem readily available, any info. you can provide would be greatly appreciated. <Again we have had a hard time getting the electric rays to feed in captivity and it may also be a problem with members of this genus. They likely will need live food (fish - make sure they are marine fish) as a major component of their diet, at least initially.> Ray question, and tank repair/bracing Hi, I was at
my LFS recently and there was a ray there. I asked what kind
and they said it was a Bluespotted Ribbontail. I
didn't think it was but I thought I guess they are
right. It was white with a lot of dark whitish spots on
it. I was thinking it was a yellow stingray or possibly a
Cortez stingray. But the question is are ribbontailed rays
white when they are born? This one probably had a 4-5"
disc width and I can't get any pictures of it either. <Mmm, the
only Ribbontail ray, Bluespotted or otherwise that comes up on
fishbase.org is Taeniura lymna,
http://www.fishbase.org/Summary/SpeciesSummary.cfm?genusname=Taeniura&speciesname=lymma
go see there, click on the one pic, look at the others... then look up
this animal on www.WetWebMedia.com, not a hardy aquarium species.> I
also have another question. The support beam on the top of
my aquarium has fallen in on one side (one side is in the
water). The other side is barely hanging on. We
called around and my LFS said that my aquarium is shot (all the water
would fall out). We immediately started draining the tank.
<Good idea... for safety's sake. The brace can be repaired,
re-installed...> Right now there is about 6" of
water in it. It is a 200 gal. tank so I estimated there is
probably about 40 gal. left in it. I took my eel to the LFS
and they are going to take care of it for me. I currently
have a bamboo shark egg and some snails in it. The shark
still has a few months before it will hatch. Nothing is on
in the aquarium right now. I was wondering will the shark be
ok with no water flow or anything? <Not likely. Better to set up
filtration like a canister or sponges with air or powerhead
drive...> Also we are going to try to repair the
beam. What do you think our chances are that it will still
work and not break? <Very good if done "properly"... I
would "double up" the current brace... with either more
glass/pieces on top, bottom or along the two sides at the top. Bob
Fenner> Thanks
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