Prognathodes aculeatus  (Poey, 1860)

Longsnout butterflyfish
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Prognathodes aculeatus
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Chaetodontidae (Butterflyfishes)
Etymology: Prognathodes: Greek, pro = first, in front of + Greek, gnathos = jaw (Ref. 45335).

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

Marine; reef-associated; non-migratory; depth range 1 - 100 m (Ref. 110583), usually 15 - 55 m (Ref. 110583).   Tropical; 33°N - 9°S, 98°W - 57°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: southern Florida and the western Gulf of Mexico to the West Indies-Caribbean region and Venezuela.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 10.0 cm TL male/unsexed; (Ref. 47838)

Short description Morphology | Morphometrics

Dorsal spines (total): 13 - 14; Dorsal soft rays (total): 18-19; Anal spines: 3; Anal soft rays: 14 - 16. Upper half of body yellow-orange, shading into blackish basally in dorsal fin; lower half of body white; orange bands on head and a narrow orange bar on caudal peduncle (Ref. 13442).

Biology     Glossary (e.g. epibenthic)

Inhabit deep coral-rich reefs and drop-offs (Ref. 47838). Feed on small invertebrates. Often seen nibbling on the tube feet of sea urchins or the tentacles of tubeworms (Ref. 9710). Unlike some chaetodonts it does not pick parasites from the bodies of other fishes (Ref. 5521). Solitary, sometimes in pairs (Ref. 47838). Seek refuge when approached (Ref. 47838). Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Form pairs during breeding (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

Allen, G.R., R. Steene and M. Allen, 1998. A guide to angelfishes and butterflyfishes. Odyssey Publishing/Tropical Reef Research. 250 p. (Ref. 47838)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Aquarium: commercial
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 22.9 - 28, mean 26.5 (based on 234 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5002   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02188 (0.01082 - 0.04423), b=3.02 (2.85 - 3.19), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.4   ±0.2 se; Based on diet studies.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .