f0 = wild caught fish
f1 = spawn of wild caught fish
f2 = grandkids of wild caught fish
and so on....

If the fish are f1's that means that they weren't wild caught, but their parents were. They won't look any different from wild caught ones, but most people find that fish that were born and raised ...

Thank you both for your help, but unfortunately the catfish died last night, and my lfs does not have anymore and does not intend on stocking them again. The next time I have an encounter with these fish I will be sure to be more careful! I had no idea they were so sensitive.

Thanks again,
Eric

Please help! I recently bought two Flag-Tailed Porthole Catfish (Dianema urostriatum)from my lfs, and added them to my 90-gallon catfish aquarium. One recently got sick, with frayed fins (dorsal and pectoral were the worst affected), with whitish areas on the sides of the body (not puffy like fungus ...