My Cory cat!

[AmberC]

About a month ago I got my second albino cory cat and days after I noticed one of them form a lump under its belly. It wasn't too big. After that... I lost three fish to what looked like it might be dropsy. I'm still not sure. Then today I was looking at the cory and the lump is HUGE. Taking up the whole underside of the belly. The fish is swimming and eating and interacting just fine. There are no lesions... all my water parameters are normal.... Does anyone know what this is?

 

[Idolz]

Hmmm, I can't say I have come accross that before...
I would move him to another tank if I were you.

 

[snowyangel]

Whats your substrate like? Is it big pebbles? I was just thinking maybe your substrate is too large and its scratches/irritates them and causes swelling??
Thats just a guess, but that cory has lots of swelling. Hopefully someone can help you out.