Some wrasse species are aggressive towards small fish and invertebrates, others are reef safe.
en.wikipedia.org Fishing, and especially spearfishing, is banned, hence the creole wrasse, parrotfish and snapper that were gawping at me in the indigo silence.
www.telegraph.co.uk It has also been found in green algae, bacteria, crustaceans, and fish such as carp, golden mullet, seabream and trush wrasse.
en.wikipedia.org They are protogynous hermaphrodites, all starting off as females and changing to males, a process which, for the moon wrasse, takes only 10 days.
en.wikipedia.org Some genuine cleaner fish, such as gobies and wrasse, have the same colours and patterns, in an example of convergent evolution.
en.wikipedia.org