Help with a sick fish

[naesco]

Originally Posted by BMahura

i have regular nori. will this do the trick?
my other fish are a yellow tang, hippo tang, pair of true perc clowns, bangaii cardinal and a yellow tail damsel. i feed mysis once a day.

The tangs should be plump looking when you view them from the eyes rearward. If not you are underfeeding them. The yellow needs nori daily and the hippo is a meat eater.
Regular unflavoured nori soaked in selcon (get it from an LFS) and garlic extreme. Overfeed until they get back into shape.