thats weird mine would kill any other one i would add to the tank, only fronts though. went through like 4 of the things when i decided he was a ruthless s.o.b.
So now my bigger front won't let my new one eat I'm taking her into my work tonight and trading her in for 2 4" Burundi, she's not going to make it if I leave her in here. It's been going on for like a week now, anytime she even comes out of the rocks Bubba chases her around the tank. Fins are getting all nipped up. Not good.