Hey Ive got M & F convicts in a 20G. What Im worried about is the male beating on the female. I had him in the tank for about 3 days before I could get her and she is a fair bit smaller than him. She would be about an inch and a teeny bit less in length but the main difference is in the height(if that makes sense) of the fish. He is much more robust than her and is giving her a bit of a hard time. Will this settle down or should I try and take back the male and swap him for a smaller one? Thanks for any replies.