That's awesome that he does nothing but pellets. I have been trying to get my one to do that. He just watches the other fish eat them all up and waits for the shrimp. lol
just power feed and they will grow.i bought 5 about 3 months ago and they grew about 3" already. the fast one of my dats grew was 7" in one year. i feed my dats 3 to 4 times a day live and alot of bloodworms.