well, I bought 2 male dovii's at a LFS, both the most dominant, had them in the 55 for about a week, then bought 1 jack dempsey thats literally half there size and the little jack is beating them up, dovii's are 3 inches, jack dempsey 1.5? Is this normal I had dovii's before these guys, and they were all pretty peaceful, it's not bad, it's just odd how everyone is judging the dovii for being a mean nasty fish? I cant believe a little jack is chasing them?. They will all be going to a 200 gallon..maybe with a butti.