I dont know what to do. I have two angels in a 20 gal - I know tight. I had one and was gifted the other - yes I know they shouldn't have done that. But they put it in my tank so oh well. They have recently been getting really aggressive with eachother. One is very tiny the other is abnormally large. The little one had always nipped the largers fins everynow and again. But recently the smaller will chase the bigger around the tank and often. Today I saw them lock lips and push eachother back and forth aggressivley. The strange thing is that the larger one never fights back (except today) and he always follows around the smaller one when they aren't fighting. The other reason I don't want to give the angels back to the petstore is because 1. They are both almost full grown so theylle be less likely to be chosen and even with the both of them in this tank theylle have more room with me. 2. I just bought a 55 that I was going to stock with angels at the centerpeice. Should I just give the fish back? Any other advice?