I had one 4 inch comet in my 1000-1100 gallon pond and this weekend I got two more (same size). One of the new ones has chased the original one and also the other new one pretty much constantly since I put them in. I keep cichlids in indoor aquariums and most of them are naturally aggressive. Usually they stake out territories so its that big of a deal. IF it does get bad, a divider can be put in. In the pond though, that is not an option. I was never expecting this. So what do you guys do about it?