OK.. just recently my my red devil outgrew his 55 gal. so my friend has like a 220. i dont wanna just get rid of my red devil to some pet store so i asked him if i could put it in his tank. He says yes.. if my umbee doesnt kill it..they are both about 9 or so inches. we had an argument for a while over it. So i figured i would ask you guys. what do you think would win. both are males