Actually the above information is for the most part, incorrect. Clownfish trios are actually common in nature and do well in home tanks. It is a proven fact the pair will allow another clown, or several, of the same species to hang around the anenome, but not in it, as a backup in case one of them dies. In fact I have a trio of orange skunk clowns that have been together in the same 10 gallon breeding tank for almost a year now with no aggression at all. The pair spend most of their time inside the flower pot and the 3rd hangs out beside it. All 3 swim together and feed together, he just cant go into the "nest". I have also done this with ocellaris in the past, but I would not reccomend it for maroons. The most important thing is that there is one female and the others are male. I hope that helps.