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Parrotfish (pair-ut-fish) are a subgroup from the Labridae family and one of the most important groups of herbivorous fishes found on coral reefs with about 90 known species to the date.  Although phylogenetic and evolutionary analysis of parrotfishes is still ongoing, it is now accepted that they are a clade in the tribe Cheilni, and more commonly now referred to as scarine labrids.  Parrotfish are named for their dentition; their numerous teeth are arranged in a tightly packed mosaic on the external surface of the jaw bones, forming a parrot-like beak with which thet rasp algae from coral and other rocky substrates (which contributes to the process of bioerosion).  Many species are also brightly colored in shades of blue, green, red, and yellow.