ideas for fatting up a Naso Tang - Naso lituratus

[DEAD_BY_DAWN]

ive just picked up this skinny little naso tang( normally i dont buy fish that are not in great shape but i felt sorry for this guy),other than the weight loss,he seems to be doing well i dont have tons of algea for him to eat have tried macro algae from my reef but not much interest is shown any other foods i can try nori etc will be picked up in the morning .