HomeMarine aquarium fishAngelfish & butterflyfishBluelashed butterflyfish Bluelashed butterflyfish (Chaetodon bennetti) Scientific name: Chaetodon bennetti Cuvier, 1831 The Bluelashed butterflyfish (Chaetodon bennetti) is a marine fish of the family Chaetodontidae. Native range: Indo-Pacific, East Africa to the Pitcairn Group, north to Japan, south to Lord Howe and Rapa islands. BiologyDorsal spines (total): 13 - 14; Dorsal soft rays (total): 15-17; Anal spines: 3; Anal soft rays: 14 - 16. Body yellow and large black blotch with blue circle on sides. Juveniles appear to be very similar in coloration to the adults except for the white outline of the black spot which disappears as the fish increases in size.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChaetodon bennettiFamilyChaetodontidae (Butterflyfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Depth range1–30 m (3–98 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 1 - 30 mClimateTropicalDistributionIndo-Pacific: East Africa to the Pitcairn Group, north to Japan, south to Lord Howe and Rapa islands.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More angelfish & butterflyfishPajama cardinalfishSphaeramia nematopteraEastern triangular butterflyfishChaetodon baronessaBurgess' butterflyfishChaetodon burgessiThreadfin butterflyfishChaetodon aurigaSpeckled butterflyfishChaetodon citrinellusSaddle butterflyfishChaetodon ephippiumSee 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