Krøyer's deep sea angler fish

Krøyer's deep sea angler fish (Ceratias holboelli) is a species of fish in the family Ceratiidae, the sea devils. This deep-sea anglerfish is found in all oceans, at depths of 0 to 4,400 m (0 to 14,436 ft), but mainly between 400 and 2,000 m (1,300 and 6,600 ft).[1] Females typically are 77 cm (2.53 ft) long, but can reach 120 cm (3.9 ft).[1] The much smaller males only reach 16 cm (0.52 ft) and they are symbiotic, as they attach themselves to a female.[1]

Krøyer's deep sea angler fish
Female with a parasitic male on the belly, preparation at the Zoological Museum of Saint Petersburg
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Lophiiformes
Family:	Ceratiidae
Genus:	Ceratias
Species:	C. holboelli
Binomial name
Ceratias holboelli Krøyer, 1845

The species' scientific epithet commemorates Carl Peter Holbøll, a Danish civil servant and early explorer of the fauna of Greenland. Several specimens have been found in the stomachs of sperm whales caught in the Azores and in the Antarctic.[2]

Other common names include longray seadevil and northern seadevil.[3]