I have a single Schwartz's cory (can't find more of them anywhere) and three peppered corys. Lately, that is for the last week or so, the Schwartz's cory has been swimming mid- and top-level in the tank all the time. I have no idea why. It doesn't look unwell, except that its fins are somewhat ragged. It has the ability to swim both to the top and to the bottom it just...doesn't.
Anyone know why it might do such a thing?
Anyone know why it might do such a thing?
