PlanetCatfish.com

Hi folks, this is my first post, I'm a newbie and newly infatuated with Corydoras. I happened to be at walmart today and found these in the assorted cory tank. I NEVER buy fish at Walmart but fell for the one with the hi-fin so I bought a pal for him/her also. This was the only one with the hi-fin, many others same but with normal dorsals mixed in with peppered cories. I've looked through the pics on this site and didn't find them. Know what they are? Are they male/female, adult/juvi?? They are about the same size, not as it looks in the pics. Maybe an inch, inch and a quarter?
Thanks for looking!


By the way, Love this site!!

very handsome fish! First one looks like a female, maybe also the second but I am not sure, maybe Corydoras aeneus?

They do look like normal bronze corys - i'm not sure if the high dorsal one is deliberate selective breeding to produce the greater size fin or an accident but as Walmart would only have captive bred bronze corys, i'd be pretty certain that it is like that with man's influence there may have been a batch of reular & high-fin and some/or one got mixed

Thanks for the help! I had looked through the pics of the C.Aeneus but didn't find any with the hi fin like that so I thought it may be something different. There are so many variations!

Long fins is just one of many mutations/genetical defects that fish can acquire through breeding efforts - just like humans have helped cats, dogs, horses, cows etc to "become" different forms than the natural species. In nature, it's most likely that all of these would occur once in a while, but many forms are sufficiently handicapped to not survive often enough to make those variants "stick". In some places, however, we do find natural albinos (those fish that naturally live in caves for example are often albino and blind - as it makes no difference what colour the fish is for it's survival, and eyes aren't much use either in complete darkness).

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Mats