I bought two convicts awhile ago to breed. They were both about 1" long. Soon the male grew to about 2.5" and was chasing and attacking the female, he even bit off most of her tail. So I removed her and bought a different female from the LFS and threw her in the tank today. Same thing happened. So I but her into my 10 gal quarentine tank. Do you have any idea's that will make him less agressive? I already tryed rearranging the tank before I added the new fish. It still didnt work. I think I may throw the male in the 10 gal and the female in the 20 for a while. Mabye the female will grow a little to defend herself and the male will be less territorial when he returns. Any ideas?