I have a mated pair of convicts, with a bunch of the babies in the tank, its a 30 gallon, soon I am going to bring the babies to a pet shop, or upgrade to a 55 gallon tank for them. but latily the parents have been fighting. there is a pleco in there and a red finned botia dude. there are about 5 cave things for them to check out. before they would fight once in a while, when one would nipe at a babie, but now its all the time.