Hi there, anyone have any suggestions on how to curb / reduce aggression between my indo dats? Specifically, we have 3 IT's in a 60 gal grow tank. The largest one is about 4 inches (he is the one chasing the other 2), one at 3.5 inches, smallest guy at 2.5 inches (he has been pushed to the corners of the tank, perches all day, very shy). Any suggestions would be appreciated.