0 any of a group of fish that are usually brightly coloured and have thick lips and teeth that stick outwards :
This wrasse has fleshy lips, a single row of conical shaped teeth, and a small eye.
Like most wrasse, it is known to change sex (from female to male).
This wrasse is very common and is found in a variety of habitats.
It has also been found in green algae, bacteria, crustaceans, and fish such as carp, golden mullet, seabream and trush wrasse.
A wide variety of fishes including wrasse, cichlids, catfish, and gobies display cleaning behaviors.
They are protogynous hermaphrodites, all starting off as females and changing to males, a process which, for the moon wrasse, takes only 10 days.
Some genuine cleaner fish, such as gobies and wrasse, have the same colours and patterns, in an example of convergent evolution.
Some fish regularly clean others, and wrasse and shrimp appear to specialise in this regard, as do remora, which permanently hang on to their hosts.
