Sickle snaggletooth (Borostomias mononema)

Scientific name: Borostomias mononema Regan & Trewavas, 1929

The Sickle snaggletooth (Borostomias mononema) is a marine fish of the family Stomiidae.

Biology

Dorsal soft rays (total): 13; Anal soft rays: 18. Body moderately elongate and slender, enlarge fanglike teeth in the jaws. Moderate chin barbel, bulbous black proximal part and narrow pale distal part. Serial photophores not broken into small groups.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Borostomias mononema
Family: Stomiidae (Barbeled dragonfishes)
Order: Stomiiformes (Lightfishes and Dragonfishes)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 31.0
Depth range: 640–658 m (2100–2159 ft)
Environment: Marine; bathypelagic; depth range 640 - 658 m
Climate: Deep-water
Distribution: Eastern Atlantic: Morocco south to Congo. Western Atlantic: southern part of USA to the Gulf of Mexico and the Caribbean Sea. One specimen collected off the Guianas. Western Pacific: Australia and New Zealand. Also known from the Northwest Pacific. Elsewhere, Indian Ocean.
Conservation status (IUCN): Not Evaluated
Threat to humans: Harmless
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

Last updated 27 September 2026