well i got a new 9-10 inch tem for 45 bucks and when i had put it in my tank with my orino. the orino began to attack it at times it was just a fake charge and a nip from time to time and now today i saw them get into a mouth lock and really attacking each other with a loud noise. they only fight time to time. should i separate them or let them establish there rank. the tem is extremely mellow and only fights back if he feels really threatened.