He's rather mean really. I also purchased an O which was slightly larger. Needless to say, it was back at the LFS within an hour of being purchased. The Jag just wouldn't leave him alone and even though the O was larger, it was fighting a losing battle. Now the little 1.5-2" Jag has the 75g to himself. He's already eating freeze dried shrimp off a shishkabob skewer (part of me hoping to be able to hand feed him eventually).