No its perfectly fine in a reef system. I used to have one till I woke up onemorning and it died. I don't know why but it just died for now apparent reason. I have a purple tang and a powder blue tang. Just watch out the tang family can get ick vary easy. I best thing for that is a UV sterilizer and a cleaner shrimp or cleaner wrasse. I have both and the wrasse does his job better.
There is one fish which you need to be careful of. It's False Cleaner Wrasse. The color patterns are almost the same as the True Cleaner Wrasse. They used mimicry to their advantage. Unsuspecting fish tend to assume that this 'cleaner' is going to clean them off parasites but the false cleaner will instead scrape off their scales which can be quite painful for the unsuspecting fish.
Differences are distinguished by the position of their mouths. True cleaners have mouths pointing forward like those of the freshwater pencilfish. False cleaners will have mouths positioned downward. This downward position allows them to scrape off scales with ease.:wink2:
I have a pair of naso tangs and a yellow tang. it took two day but my tangs love formula one and two made by ocean nutrition.also 3 times a week i feed seaweed salad thats dried seaweed hooked up to a veggie clip
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