Reviewed species page
Rasptooth dogfish
Common name: Etmopterus Sheikoi
Etmopterus sheikoi, a lanternshark of the deep slope
Etmopterus sheikoi
Least Concern (LC)
Overview
A small deepwater lanternshark from the Northwest Pacific, Etmopterus sheikoi belongs to the dark, little-observed shark group known from deep shelves and slopes. Etmopterus sheikoi is a small lanternshark in Etmopteridae, a group of dark sharks marked by no anal fin, dorsal spines, and species-specific photophore patterns. The available record places this species in the Northwest Pacific, on the Kyushu-Palau Ridge.
This species is associated with deep marine habitat, and the broader lanternshark account points to outer shelves, slopes, seamount flanks, and deep pelagic layers below sunlight.
Why it matters: Lanternshark photophore patterns can help distinguish similar-looking species.
Common nameEtmopterus Sheikoi
Scientific nameEtmopterus sheikoi
FamilyEtmopteridae
OrderSqualiformes
Max length0.4 m
Depth range300 to 500 meters
ConservationLeast Concern (LC)
RegionNorthwest Pacific: Kyushu-Palau Ridge
What this shark is
Etmopterus sheikoi is a small lanternshark in Etmopteridae, a group of dark sharks marked by no anal fin, dorsal spines, and species-specific photophore patterns.
Where it lives
The available record places this species in the Northwest Pacific, on the Kyushu-Palau Ridge.
This species is associated with deep marine habitat, and the broader lanternshark account points to outer shelves, slopes, seamount flanks, and deep pelagic layers below sunlight.
How it differs from similar sharks
Compare it against Brown lanternshark, Etmopterus Alphus, and Ninja lanternshark.
Why it is notable
No direct human-interaction detail was available for this species in the supplied evidence.
No species-specific behavior was available in the supplied evidence; lanternsharks are generally poorly observed deepwater sharks that spend much of their time in dim water.
Related shark pages
These links are meant to help readers continue through related species, not force extra clicks.
Brown lanternshark
Etmopterus unicolor
0.8 m maxData deficient (DD)
Etmopterus Alphus
Etmopterus alphus profile
Ninja lanternshark
Common name: Etmopterus Benchleyi
Etmopterus benchleyi
0.3 m maxLeast Concern (LC)
Etmopterus Brosei
Etmopterus brosei profile