As mentioned, I'm one that fed my Tig market shrimp it's whole life from 5". I got it from Rich (Infinite Aquatics) and I tried feeding a great variety of different foods and it would only eat shrimp and krill. I decided that shrimp was the better alternative because I could slice a hole in it and stuff it with nutritious pellets. I would cut the shrimp into smaller pieces when he was younger and he digested it fine. He did one time regurgitate a whole large half digested prawn but that was when he was older...like 16"+. No issues after that. Another thing that might be important. I only fed him once or twice a week.