I have a sick leopard cory that I can't seem to figure out what is wrong with him. All my water parameters are fine (0 ammonia, 0 nitrite, 10-20ppm nitrate) and the 5 other leopard corys in the tank are all unaffected (at least for now). He's eating well and acting pretty normal (a little more brave than the others believe it or not).
Does anyone have any idea what is wrong or have any idea on how to cure him? Any help would be much appreciated.
Thanks in advance!
