Naso getting very skinny

[fishy7]

My Naso is eating and swimming like the rest of my fish, but he is loosing weight.
Any thoughts??

Thank you

 

[sepulatian]

What are you feeding him? How old is your system and how much growth is on the rocks?

 

[fishy7]

He along with the others get seaweed everynight and rotate marine cusine, emerald entre, squidd, mysis shrimp and brine. All my other tangs are doing great. My naso is older and not sure how old he is????
My water is on the mark with no issues.