HI I’m new to this forum and to keeping cichlids. I was given this tank because the person who had it couldn’t take it due to moving. The first 4 fish are peacocks and seem to not move from the top of the tank. The second I don’t know what it is. It’s grayish/blue he keeps chasing all the other fish. And lastly the smallest has his tail all torn up and won’t come out from behind the intake, if he does the grey fish attacks him. From what I was told this is a fairly new tank. They got the grayish/blue fish two weeks ago and all other fish are from 2 days ago. Due to unfortunate events they gave me the tank today. Can anyone help me?