The yellow-crowned butterflyfish (''Chaetodon flavocoronatus'') is a species of

butterflyfish The butterflyfish are a group of conspicuous tropical marine fish of the family Chaetodontidae; the bannerfish and coralfish are also included in this group. The approximately 129 species in 12 genera are found mostly on the reefs of the Atla ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Guam Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...

and the

Northern Mariana Islands The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands (CNMI; ch, Sankattan Siha Na Islas Mariånas; cal, Commonwealth Téél Falúw kka Efáng llól Marianas), is an unincorporated territory and commonw ...

. The pattern of this species is that the body diagonally divided between the anterior ventral half which is silvery white, and the dorsal posterior jet black half. A flash of colour is given by two yellow bands, one through the eye and the other over the crown. It is found at depths of over in areas dominated by black coral. It is an oviparous species which forms pairs to breed. It feeds on

zooplankton Zooplankton are the animal component of the planktonic community ("zoo" comes from the Greek word for ''animal''). Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by ...

, tubeworms and other benthic invertebrates.

References

Fauna of Guam Chaetodon Fish described in 1980 Taxonomy articles created by Polbot {{Chaetodontidae-stub