''Prognathodes falcifer'', the northern scythemarked butterflyfish or northern scythe butterflyfish, 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 Atlant ...

found at rocky reefs in the tropical Eastern Pacific, where found at depths of off southern

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

( La Jolla and Santa Catalina Island), southern

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

Guadalupe Island Guadalupe Island ( es, Isla Guadalupe, link=no) is a volcanic island located off the western coast of Mexico's Baja California Peninsula and about southwest of the city of Ensenada in the state of Baja California, in the Pacific Ocean. The ...

San Benito Island The Islas San Benito lie in the Pacific Ocean off the west coast of the Mexican state of Baja California, 25 km west of Cedros Island. They are part of the Cedros Island ''delegación'', a subdivision of Ensenada (municipality), Baja Califo ...

and Revillagigedo Islands.Robertson, D. R., and Allen, G. R. (2008).
Prognathodes falcifer.
'' Shorefishes of the Tropical Eastern Pacific online information system. Version 1.0. Smithsonian Tropical Research Institute, Balboa, Panamá. Accessed 24 May 2011.Adams, J. (2009).
Prognathodes carlhubbsi: will the real scythe butterflyfish please swim up?
' Reef Builders. Accessed 24 May 2011. In the past it also included populations off

Central Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known as ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

, but in 1995 these were described as a separate species, '' P. carlhubbsi''. Compared to that species, ''P. falcifer'' has whitish-grey (not clear yellow) belly and flanks, the black line through the eye is paler and less distinct, and the angle of the inverted black "V" on the side is shallower.

References

External links

* falcifer Taxa named by Carl Leavitt Hubbs Taxa named by Andreas Rechnitzer Fish described in 1958 {{Chaetodontidae-stub