I had an ntt that was about that size that wouldn't even look at any other food but feeders, I finally got sick of feeding him and decided ef it, if he eats he eats if not then whatever. It took four months!!! He started looking at shrimp, but wouldn't eat it, another month till he took shrimp but wouldn't swallow, and I finally tried tilapia fillet, man he hit the stuff so hard I couln't believe it happened!! Moral of the story: I starved a dat that cost me 70 bucks for nothing, I should have just tried the tilapia from day one...lol Suggestion: Try different things, the best bet is to get him on blood worms, if you can do that then you can freeze a chunk of shrimp covereved in blood from the worms and the fish tends to eat it because it still thinks that it is blood worms. Until you truly get sick of feeding it feeders you will never have a shot at any results. Don't give in.