I have three convicts in my 55 (to make sure i have a pair) one for sure is a female that i just bought. The other is iffy and the other is a small male i just bought also. I keep the water about 80-81 in my tank and all my fish are very active. When i first put the female in the biggest convict (iffy on gender) fought her lip locked and everything. now all the convicts chase each other but dont really fight. why wont they pair up? I have no experience with breeding convicts except for a good friend of mine where he ended up with two accidental pairs in a 30 gallon cube.