HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesBarbeled dragonfishesG?nther's boafish G?nther's boafish (Stomias affinis) Scientific name: Stomias affinis G?nther, 1887 The G?nther's boafish (Stomias affinis) is a marine fish of the family Stomiidae. BiologyDorsal soft rays (total): 17-20; Anal soft rays: 18 - 23. Small teeth on each side of mandibular symphysis. Small photophores in the body.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameStomias affinisFamilyStomiidae (Barbeled dragonfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length21.9Depth range0–3182 m (0–10440 ft)EnvironmentMarine; bathypelagic; depth range 0 - 3182 mClimateDeep-waterDistributionCircumglobal in tropical and subtropical waters. Eastern Atlantic: Mauritania south to Angola. Also across the Atlantic between 0 and 20?N, extending to 35?N and 39?S in the western part (USA to Argentina). South China Sea, East China Sea and waters near to Taiwan Province.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026