I recently got a 2.5 " Umbee,i have a 4"or close to Firemouth,the firemouth has been a pain in the butt since i got him nipping all my other fish when they werent looking(4" Dovii,4"Texas,5"Dempsey)usually the other fish would turn around and chase the Firemouth a couple of inches then let it end,but he started picking on the umbee last nite when i 1st put him in the tank,but the umbee turned things around and whupped on him so bad that he has been staying up in a corner all day.But here is the thing,the umbee leaves the Firemouth alone but if the umbee should come within a few feet of the Firemouth the firemouth charges at the umbee and gets his butt whipped again even my grammode has started nipping back at the Firemouth(the firemouth had totally been making the grammode miserable).Should i remove the firemouth or do you guys think things will work out??Having a tank loaded with aggressive fish who would have thought a Firemouth would be the biggest jerk!!I dont think i will ever buy another Firemouth again,Nick.C.