Its funny the yellow tangs a total pig. I can get the powder blue to eat just not enough by my standards though I am sure as he gets more comfortable he will eat more. I have tried, brocolli "he ate just a little, lettuce "didnt like", Nori "ate just a little", flake with garlic "he likes but still eats just a little". This fish though beautiful acts really stupid when it comes to food. Guess there just used to having mega ammounts of swimming room where they can swim back around fast and pick up the snack-