Johnrandallia nigrirostris (Gill, 1862)

Blacknosed butterflyfish

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Chaetodontidae
Synonyms	Sarothrodus nigrirostris, Chaethodon nigrirostris, Heniochus nigrirostris, ... more
Common names	Barberfish, Black-nosed butterflyfish, Mariposa barbero, ... more

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Image of Johnrandallia nigrirostris (Blacknosed butterflyfish)

Picture by Allen, G.R.

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AquaMaps Data sources: GBIF OBIS

Main reference

Schneider, M. 1995. (Ref. 9286)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 20.0 cm TL male/unsexed; (Ref. 9286); common length : 14.0 cm TL male/unsexed; (Ref. 55763)

Environment

Reef-associated; marine; depth range 6 - 40 m (Ref. 9286), usually 6 - 12 m (Ref. 9286)

Climate / Range

Tropical; 40°N - 10°S, 120°W - 70°W

Eastern Pacific: Gulf of California to Panama, including the Cocos, Malpelo and Galapagos Islands.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 24 - 25; Anal spines: 3; Anal soft rays: 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).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Aquarium: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (15 of 100)	Not marketed/unknown

Entered by Agustin, Liza Q.

Modified by Luna, Susan M.

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Page last modified by : elaxamana, 15 July 2009

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