Try feeding him what you have.
If he's as tiny as he looks maybe some baby brine shrimp or brine shrimp. Look stoo small for pellets. lol
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.