HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesRichardson's snaggletooth Richardson's snaggletooth (Astronesthes richardsoni) Scientific name: Astronesthes richardsoni Poey, 1852 The Richardson's snaggletooth (Astronesthes richardsoni) is a marine fish of the family Stomiidae. BiologyDorsal soft rays (total): 15-17; Anal soft rays: 12 - 15. Barbel without pigment, tapering to end, lacking swelling or bulb. Body moderately elongate and slender. Maxillary teeth closely spaced. Serial photophores not broken into small groups. Luminous patches present on margin of operculum. Black in color.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAstronesthes richardsoniFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length15.9Depth range275–1000 m (902–3281 ft)EnvironmentMarine; bathypelagic; oceanodromous; depth range 275 - 1000 mClimateDeep-waterDistributionEastern Atlantic: Mauritania south to Angola; reported from central Namibia. Western Atlantic: Gulf of Mexico and Bahamas area; and across the Atlantic (20?N-10?S). One specimen known from the southwest Atlantic (25?27'S, 35?56'W).Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026