I would say he was around six or seven inches when i got him, but mostly length/not a lot of girth. The last time I measured him begging against the glass he was over 13 inches and very chubby even without a full belly. He can easily eat a thick seven inch smelt no prob. I stuff them with massivore. He also likes chunks of pompano, night crawlers, tilapia, and whole prawns. He hasn't had feeders in quite a while. Surprisingly he is very gentle with his tank-mates and for the most part completely ignores them now.