Argyropelecus

Argyropelecus is an oceanic ray-finned fish genus in the deep sea hatchetfish family Sternoptychidae. A collective name is "silver hatchetfishes", but this can also refer to a species of the freshwater hatchetfishes which are not particularly closely related to this. The large pupils of these marine hatchetfishes enable them to see dim objects in the deep sea, where light barely penetrates.

== Species == There are currently seven recognized extant species in this genus: Argyropelecus aculeatus Valenciennes, 1850 (lovely hatchetfish, Atlantic silver hatchetfish) Argyropelecus affinis Garman, 1899 (Pacific hatchetfish) Argyropelecus gigas Norman, 1930 (giant hatchetfish, greater silver hatchetfish) Argyropelecus hemigymnus Cocco, 1829 (half-naked hatchetfish, short silver hatchetfish, spurred hatchetfish) Argyropelecus lychnus Garman, 1899 (tropical hatchetfish) Argyropelecus olfersii (G. Cuvier, 1829) Argyropelecus sladeni Regan, 1908 (Sladen's hatchetfish, silvery hatchetfish)