Abyssal halosaur

The abyssal halosaur (Halosauropsis macrochir) is a species of bottom-dwelling, deep-sea fish in the family Halosauridae that is found in all oceans at depths of 1100 to 3500 meters.^[2][3] It is the only member of its genus.^[4]

Abyssal halosaur
Abyssal halosaur, Halosauropsis macrochir
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Notacanthiformes
Family:	Halosauridae
Genus:	Halosauropsis Collett, 1896
Species:	H. macrochir
Binomial name
Halosauropsis macrochir (Günther, 1878)
Synonyms
Halosaurus macrochir Günther 1878 Aldrovandia macrochir (Günther 1878) Halosaurus goodei Gill 1883 Halosaurus niger Gilchrist 1906

Abyssal halosaur can reach total length of at least 76 centimetres (30 in) and weight in excess of 400 grams (14 oz). Berstad et al.^[3] could not sex fish smaller than 25 cm, giving an indication about length at maturation. Abyssal halosaur are long-lived, with maximum reported age of 36 years, although individuals sampled on the Mid-Atlantic Ridge were mostly <20 years. It appears to be an opportunistic feeder, mostly taking epibenthos and small fish.^[3]