Ok so i got a new rhom other day and put him in a tank, which i now know has a little leak, so for now ive had to move my 4" serra rhom in with my 6" red belly, which i dont think is very helpful at all seen as though the red bely has already started to nip my rhoms fins and i cant find a tank seperator anywhere until i get another tank to house my rhom. shouldnt the rhom be kicking ass or is it because of the substantial size difference?