That is a picture that HappyCoral took of my fish when Christian came over one time to see my tank and drop off stuff I bought. He is a sweet little guy a lot more laid back then the other 2 tangs. These tangs get pretty big I have read up to 18 inches in the wild. I will need to find him a new home if he grows that large of course. We will see. Right now he is about 3 inches. He has always been really healthy but I put average occurrence for diseases cause Tangs are kinda notorious for ich and such. His name is Freckles and he is 2 out of 4 of my kids' favorite fish.
I love mine, it is 3 yrs old and has a forked tail and its pec fins are bright yellow, they do grow quick,mines about 9" now, and love the red/brown algaes. It is in with a achilles,purple and tomini tang...no issues