Cory ID please?

_:lmcw:_

9 months ago I bought 3 corydora trilineatus (false julii) for my newly cycled 29 gallon from an lfs I hadn't used before with the intention of getting 3 more the next week. Once they were out of the bag in my tank and their color returned I noticed one was twice the size of the other 2 and was a dark grey color instead of the silvery white, but still had distinguishable markings of false julii.

I started noticing she (I assume "she" due to the larger size) never swam with the other 2 and stayed by herself on one side of the tank. A few days later I found one of the smaller ones dead with weird fuzzy mold looking stuff coming off of its head and the other one developed a swim bladder problem that eventually killed it. All this time my ammonia and nitrite remained 0, nitrates under 5, ph at 7 and my temp at 76.

I never went back to that lfs and the remaining odd cory is perfectly healthy to this day as well as everything else in my tank. I would love to get her some fellow cories, but I'm not sure if she is just an unusually dark colored false juliI or a different breed altogether. She didn't swim with the others so I'm worried that if I get the wrong kind she will still be alone.

Any ideas?
 

_:lmcw:_


20130505_143641.jpg

Sorry, I suppose a picture would be helpful!
 

_:lmcw:_

no one knows?
 

Lilibeth_Seasong

I would probably guess at either a JuliI or False JuliI cory. I don't know for sure, the picture is a little dark. Try Googling cory varieties and see if you can find one that looks like it.
 

_:lmcw:_

That's the thing... my picture isn't dark, that's the color my cory is. I've been looking at different species and I can't find anything like it.
 

AndiH

It could be that dark due to the dark gravel. Also, that gravel looks a bit rough which can cause damage to barbels and may lead to infection. Try to switch to a pea gravel or sand substrate if/when you can.
 

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