I have two male keyhole cichlids which I have had for about a year. They are both about 2.25" long (one being slightly smaller than the other) and are just starting to color up and get adult finage. My porblem is the smaller one has just started chasing the larger one around for the past couple of days. They have always stayed pretty close together in my 60 gallon so this aggression is strange. My question is will this aggression pass with a little time? Can I lighten it up by adding a few more keyholes of similar size? Or is the best option just to move the "victim" to my 24 gallon? Thanks for the help.