Hey everyone, i just came in from school and i see my 4.75 in jag beat up. his fins and tail are shredded, and scales are missing. But yet yesterday he was looked fine. He is in a 55G tank with 3 black belts, one dovii, one dempsey, and one female convict. And i have a pic so you guys can see the size of everyone. Can u guys tell me what i can do to prevent this and still keep everyone together