My 55 housed a jd and convict for over a 1 and half years. The convict got beat up but he could hold his own.
Then about a month ago I was at the lfs and saw this great looking 6 inch Rd. I had to have him. The convict got beat up pretty bad. So he now lives in my buddys 55 by himself, wounds healing.
Now the jd and and rd get along pretty good. Actually there is no fighting at all. Except when its worm time. This rd is a pig, always acts likes he is hungry. Way cool fish. Oh yea they will be in a 135 soon. Good luck Tim