i lost a dwarf gourami from this last month, his scales didn't stick out, he just got fat in 2 days, and stayed that way.when he died he was bleeding from his anus.all the other fish in the tank were fine, and haven't lost another fish till today, when a cory turned up dead, with no marks on him?????????
try to feed the fish a pea, mabye he's just stopped up.
gl
mark