Last week I noticed a lot of what I thought was poop floating on the gravel after looking a little closer I noticed the poop was actually a load of Convict fry, it was great. Everything was fine but today the male has started becoming quite violent towards the female, he just rams her when shes looking after the kids. Is this normal or should he be removed. They are no marks on the female so I think he's just ramming, not biting?