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Large-eye snaggletooth
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Stomiiformes
Family:	Stomiidae
Genus:	Borostomias
Species:	B. antarcticus
Binomial name
Borostomias antarcticus (Lönnberg, 1905)
Synonyms
Astronesthes antarcticus Lönnberg, 1905 Borostomias macrophthalmoides Koefoed, 1956 Borostomias macrophthalmus Regan & Trewavas, 1929 Borostomias roulei Regan & Trewavas, 1929 Diplolychnus bifilis Regan & Trewavas, 1929

The large-eye snaggletooth (Borostomias antarcticus), also called the straightline dragonfish or Antarctic snaggletooth, is a species of fish in the family Stomiidae (barbeled dragonfishes).

Description

The large-eye snaggletooth is black in colour, up to 35 cm (14 in) in length. It has 9–13 dorsal soft rays and 12–17 anal soft rays. It is identified by the lack of high arch in the photophores behind the anal base, presence of double postorbital organ and the clear separation of the dagger-like teeth in its upper jaw. It has 40–60 lateral photophores extending along its belly and positioned in two straight lines. The genome of Borostomias antarcticus contains at least fifteen filovirus-like elements (nucleoprotein-like) of which nine have extended open reading frames.

Habitat

The large-eye snaggletooth is bathydemersal and mesopelagic, staying below 500 m (1,600 ft) during the day, sometimes as deep as 2,500 m (8,200 ft). It is found in oceans worldwide.

Behaviour

The large-eye snaggletooth feeds on mysids, bony fish and crustaceans.

References

1. Harold, Anthony (May 10, 2013). "IUCN Red List of Threatened Species: Borostomias antarcticus". IUCN Red List of Threatened Species.
2. "WoRMS - World Register of Marine Species - Borostomias antarcticus (Lönnberg, 1905)". www.marinespecies.org.
3. "Borostomias antarcticus". fishesofaustralia.net.au.
4. "WoRMS - World Register of Marine Species - Borostomias antarcticus (Lönnberg, 1905)". www.marinespecies.org.
5. "Travaux de la Station marine de Villefranche-sur-Mer". Station marine de Villfranche-sur-Mer. 1979 – via Google Books.
6. Smith, Margaret M.; Heemstra, Phillip C. (December 6, 2012). Smiths' Sea Fishes. Springer Science & Business Media. ISBN 9783642828584 – via Google Books.
7. Morgan, M. D. (December 6, 2012). Ecology of Mysidacea. Springer Science & Business Media. ISBN 9789400980129 – via Google Books.
8. "Marine Species Identification Portal : Borostomias antarcticus". species-identification.org.
9. ^ "Large-eye Snaggletooth - Borostomias antarcticus". www.arctic.uoguelph.ca.
10. "Borostomias antarcticus, Snaggletooth". www.fishbase.se.
11. Bigelow, Henry B.; Cohen, Daniel M.; Dick, Myvanwy M.; Jr, Robert H. Gibbs; Grey, Marion; Jr, James E. Morrow; Schultz, Leonard P.; Walters, Vladimir (October 23, 2018). Soft-rayed Bony Fishes: Orders Isospondyli and Giganturoidei: Part 4. Yale University Press. ISBN 9781933789279 – via Google Books.
12. Taylor, Derek J.; Barnhart, Max H. (2024). "Genomic transfers help to decipher the ancient evolution of filoviruses and interactions with vertebrate hosts". PLOS Pathogens. 20 (9): e1011864. doi:10.1371/journal.ppat.1011864. PMC 11398700. PMID 39226335.
13. "Borostomias antarcticus (Snaggletooth)". descna.com.
14. "Food Items - Borostomias antarcticus". www.fishbase.se.

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• Fish described in 1905
• Taxa named by Einar Lönnberg
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