Blacknosed butterflyfish (Johnrandallia nigrirostris)

Scientific name: Johnrandallia nigrirostris Gill, 1862

Blacknosed butterflyfish (Johnrandallia nigrirostris)

The Blacknosed butterflyfish (Johnrandallia nigrirostris) is a marine fish of the family Chaetodontidae. Native range: Eastern Pacific, Gulf of California to Panama, including the Cocos, Malpelo and Galapagos Islands.

Biology

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.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Johnrandallia nigrirostris
Family
Chaetodontidae (Butterflyfishes)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
20.0
Common length
14.0
Depth range
6–40 m (20–131 ft)
Environment
Marine; reef-associated; depth range 6 - 40 m, usually 6 - 12 m
Climate
Tropical
Distribution
Eastern Pacific: Gulf of California to Panama, including the Cocos, Malpelo and Galapagos Islands.
Conservation status (IUCN)
Least Concern (LC)
Threat to humans
Harmless
Uses
Aquarium: commercial
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

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Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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