so I have an established 20H planted tank. the main occupant is a female krib. also have 2 hatchets and an oto. last summer, she bred successfully with her mate about once a month and became a better mother each time. ie larger hatch and more survivors. mom and dad split parenting duties for the most part. over the winter, she became more agressive toward the male with every new brood, i had to remove him for a few weeks once, and put him back after the babies had grown. a month later, she killed him the day before she brought the latest fry out of the cave. That was a while ago, and lately she has been flashing and looking a little chubby so I thought she was ready for more fry. I got her a mate and they got along ok for a while. they've been fighting now for a few days, but everyone was in good health so I thought it would pass. she brought her latest batch of fry out of the cave today and dad is looking awful. I tried to catch him, but i can't because of all the plants/rocks in the tank. he is younger, therefore smaller than her and can't hide anywhere. is it normal for a krib to turn more agressive with each brood? any ideas to create peace? the male krib is the only victim, everyone else in the tank is safe.