Thin Naso, Fat Blue Spotted

[Mikey B]

I have three tangs in my tank....a Naso, a Blue Spot, and a Sohal. All three look great and are very active. While the Blue Spot is fat and growing like a week, the Naso has hardly grown and is on the slim side. He eats lots and looks very healthy, but he isn't keeping up with the Blue Spot on the growth meter. He eats flake food, mysis shrimp, algae, sea weed, etc....

I've read that Naso's have a problem with intestinal worms.

Any thoughts?

Thanks as always for your insights.

Mike