Well i just fed the mouse and they didnt attack it when it was alive. Instead they were fighting each other. When the mous finallyu drowned the RBs were the fist to nip at it then the Caribe came and ate all of it. I think im going to try a bigger one in a few days. I think i rushed this process because i knew the Caribe were still full and wasnt hungry/starving. Wish me luck.