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> Acanthuriformes (Surgeonfishes) > Chaetodontidae (Butterflyfishes)
Etymology: Johnrandallia: After John Randall, marine biologist, Bishop Museum of Hawaii; he worked in systematic ichthyology with fishes of Indopacific region.
More on author: Gill.

Environment: milieu / climate zone / depth range / distribution range Ecología

marino asociado a arrecife; rango de profundidad 6 - 40 m (Ref. 9286), usually 6 - 12 m (Ref. 9286). Tropical; 40°N - 10°S, 120°W - 70°W

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Eastern Pacific: Gulf of California to Panama, including the Cocos, Malpelo and Galapagos Islands.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 20.0 cm TL macho / no sexado; (Ref. 9286); common length : 14.0 cm TL macho / no sexado; (Ref. 55763)

Short description Morfología | Morfometría

Espinas dorsales (total): 11 - 12; Radios blandos dorsales (total): 24-25; Espinas anales 3; Radios blandos anales: 18 - 20. Body deep, compressed, and disk-shaped; dorsal profile of head steep and concave; snout pronounced; teeth very small and se in a comb-like band; base of pelvic spine with an axillary process; lateral line complete, extending over caudal peduncle; body yellowish; snout with a dark stain; eye bordered with black; posterior edge of operculum, base of pectoral fins, nape, and dorsal border (at base of dorsal fin) black (Ref. 55763).

Often in large schools (Ref. 5227) over coral and rocky reefs (Ref. 9286). Feed on algae, gastropods, and small crustaceans (Ref. 9286). Pick parasites from larger fishes like Paranthias colonus and Mulloides dentatus (Ref. 28023). Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Form pairs during breeding (Ref. 205).

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Schneider, M., 1995. Chaetodontidae. Peces mariposa. p. 1000-1003. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9286)

IUCN Red List Status (Ref. 130435)

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Johnrandallia nigrirostris (Gill, 1862)