Can-opener smoothdream (Chaenophryne longiceps)

Scientific name: Chaenophryne longiceps Regan, 1925

The Can-opener smoothdream (Chaenophryne longiceps) is a marine fish of the family Oneirodidae. Native range: Tropical to temperate parts of all oceans. Northeast Pacific, south of southern California to Oregon, USA.

Biology

Bathypelagic. Also mesopelagic. Males dwarfed, non-parasitic. Feeds on fishes, cephalopods and crustaceans.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Chaenophryne longiceps
Family: Oneirodidae (Dreamers)
Order: Lophiiformes (Anglerfishes)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 24.5
Depth range: 500–1000 m (1640–3281 ft)
Environment: Marine; bathypelagic; depth range 500 - 1000 m
Climate: Deep-water
Distribution: Tropical to temperate parts of all oceans. Northeast Pacific: south of southern California to Oregon, USA.
Conservation status (IUCN): Least Concern (LC)
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