HomeMarine aquarium fishAngelfish & butterflyfishFrench butterflyfish French butterflyfish (Prognathodes guyanensis) Scientific name: Prognathodes guyanensis Durand, 1960 The French butterflyfish (Prognathodes guyanensis) is a marine fish of the family Chaetodontidae. Native range: Western Atlantic, known from several localities in the West Indies and ranging south to S?o Paulo, Brazil. BiologyDorsal spines (total): 13; Dorsal soft rays (total): 20; Anal spines: 3; Anal soft rays: 15Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePrognathodes guyanensisFamilyChaetodontidae (Butterflyfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length13.6Depth range60–230 m (197–755 ft)EnvironmentMarine; reef-associated; depth range 60 - 230 m, usually 100 - 230 mClimateTropicalDistributionWestern Atlantic: known from several localities in the West Indies and ranging south to S?o Paulo, Brazil.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More angelfish & butterflyfishPajama cardinalfishSphaeramia nematopteraBlackear angelfishCentropyge hotumatuaYellowfin angelfishCentropyge flavipectoralisYellowhead angelfishCentropyge joculatorFlameback angelfishCentropyge aurantonotusMulticolor angelfishCentropyge multicolorSee all angelfish & butterflyfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026