a couple cons and a jack dempsey would go well in a 58 gallon (all female, preferably). that would be my suggestion for a 58 with a stock list including cons.Ficious;3434574; said:if the 58 is one of you main tanks have you thought about other fish for it? unless its a side job tank cons arent all that exciting to have...and like said above, only a few would be able to live happily at maturity.