Fish · La Saladita, Guerrero

Black-nosed Butterflyfish

Johnrandallia nigrirostris

Spanish: mariposa barbero

Black-nosed Butterflyfish (Johnrandallia nigrirostris)
Photographed by sirenadelmanglar on iNaturalist

Johnrandallia nigrirostris, the blacknosed butterflyfish or barberfish (from the Spanish names, El Barbero or Mariposa Barbero, "the barber" or "butterfly barber"), is a species of fish in the family Chaetodontidae, the butterfly fishes. It is found in the East Pacific, and it sometimes acts as a cleaner fish. It is the only member of the genus Johnrandallia, named after the ichthyologist John E. Randall, but in the past it was commonly placed in Chaetodon.

TaxonomyActinopterygii › Acanthuriformes › Chaetodontidae
Local records15 research-grade observations within about 50 km of La Saladita (the survey box also takes in Zihuatanejo, Ixtapa and Troncones)
Global records1,718 on iNaturalist
Most recent records2023 – 2026
Months of the 8 most recent records
JanFebMarAprMayJunJulAugSepOctNovDec
Recent local sightings

Interactive card with more photos, sounds and similar species Fish guide iNaturalist Wikipedia

Cite as: “Black-nosed Butterflyfish (Johnrandallia nigrirostris) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/johnrandallia-nigrirostris/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.