My big male jack bred with a smaller female and successfully had babies. In the mean while he continued to kick the crap out of one of the other females in the tank that is close to his size. I thought she was gonna pass away by how she looked and was always hiding. Two weeks later after the babies were all gone, he has apparently decided to switch partners. Now he is trying to mate with the bigger female, and is kicking the crap out of the previous mother. What happened to breeding partners?