marks on blue tang

[Lauren]

well he/she is eating well, just last night she was hiding in the rocks not looking so good

[Farrmanchu]

If you have a Cleaner Shrimp, that will narrow down the disease possibilties, and you should have one for a Regal, as they are Ick prone. They do jam themselves in the rocks pretty good. They don't act quite normal for about a week after buying, and it may take longer to lose skittishness. They will look funny after eating Cyclopease, so food has a big effect on coloration. Mine is about 4 inches long, when it eats a lot, a vertical line/bump is apparent on both sides, especially when turning around. Give it lots of greens, mine loves Nori.

[Farrmanchu]

Originally Posted by Lauren

well he/she is eating well, just last night she was hiding in the rocks not looking so good

If it's still eating, that's very good, but don't sacrifice water quality making sure the fish eats. It should be picking at rocks most of the time, making sure you have no Hair Algea.