Thalassoma bifasciatum?
First and foremost they shouldnot be housed in anything smaller than a 6 foot tank. After a while it will decide that it likes the taste of live food more than frozen. They have a ferocious appetite. Some may attack other fish during feedings. When that starts they may get the taste for fresh blood and then IT happens.
Thalassomas of any species don't mix well in anything smaller than a 180 IMO. Even if last fish in. They won't get enough room to swim and therefore will end up acting like a Caged pit bull on meth. If you must have him in your main tank, you cannot mix any other paddle fin or elongated wrasses. a center island rock-work is preferred. It should be an aggressive reef or even better suited, a fish only tank. At first it may be fine. However, one day it WILL snap. Not a matter of if, but when.
Being my favorite genius of fish i have tried many obtainable Thalassomas. Bifasciatum is mild as a juvi then will dominate tank as it gets older. Over the years i have tried to take on that genus while learning a lot. I have had limited success. That all being said. When i get a 180 up i will get another Thalassoma quinquevittatum or a lunare. They are amazing fish and i wish you the best of luck.
