I bought a bag of 6 longfinned rams at auction for 10$. They range in size from a tiny 1 inch including long fins to two and a half inchs, two are yellow and the rest are blues. I have three in a 20 qt and three in a 38qt. Well the smallest ram, a tiny yellow guy, is mean as heck. He chases the angels, the other two blues, and nips all fins. He is in the 38, which would seem to offer plenty of space as it is moderately planted, but he is terrorizing all the fish. What can I do to reduce the agression? Should I put the little meanie in a tank of his own--maybe a 2.5g I have? I thought rams weren't that agressive--can I expect this kind of stuff from the other rams? Also what can I do to help the fins recover from the nipping?