I have a tiger barb that I think got
ammonia posioning, and was getting harassed by the others. I put him in a tank by himself and he seems to be doing well. Fin was nipped but is growing back it seems, eating great, swimming fine. however, it seems that when I feed him he goes to the surface to eat the falkes and then when he is done, he cant swim down, like he swallows air and he struggles so hard to dive. after awile he seems fine again. don;t know enough about fish to realize if this really is something or just a unique case.
thanks