Bluehead Wrasse GALLERY 

Thalassoma bifasciatum

Wrasses have four stages of appearance (as do Parrotfishes) while other fishes have three growth stages. The distinguishing "Blue Head" is the color phase of a sexually mature male. Not only do they change color with age, but they can also change color instantly to camouflage themselves. Size doesn't matter when it comes to breeding age either. Blueheads can be found at most depths, even as shallow as a few feet.  They sometimes act as cleaner fish.  They seem to move constantly and swiftly and will associate with other wrasse species.  Size: up to 6 Inches.