Shaggy sea raven

Hemitripterus villosus

Fish
IUCN: Not evaluated

Usual depth25–212 m
Water temperature7–18 °C
Best monthsJune and November
How commonRare

Photo credit: (c) YockeyT, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist

About this species

Hemitripterus villosus, the sea raven, is a species of marine ray-finned fish belonging to the subfamily Hemitripterinae of the family Agonidae. The sea raven is found in the northwestern Pacific Ocean off the coast of Russia and Japan.

Text from the Wikipedia article “Hemitripterus villosus”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 2 records
February: 0 records
March: 2 records
April: 1 records
May: 4 records
June: 12 records
July: 5 records
August: 6 records
September: 4 records
October: 6 records
November: 8 records
December: 0 records

Depth and water temperature

Depth

Mostly recorded at 25–212 m · Deepest record: 280.5 m

0–10 m: 2 records
10–20 m: 0 records
20–30 m: 1 records
30–40 m: 1 records
40–50 m: 2 records
50–60 m: 3 records
60–70 m: 4 records
70–80 m: 1 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 4 records
110+ m: 7 records

Water temperature

Recorded in surface water of 7–18 °C

6–8 °C: 7 records
8–10 °C: 1 records
10–12 °C: 2 records
12–14 °C: 6 records
14–16 °C: 8 records
16–18 °C: 7 records
18–20 °C: 2 records

Photos

Names and classification

English: Shaggy sea raven, Sea Raven

Names in 2 more languages

Japanese: Kemushikajika, ケムシカジカ
Korean: 삼세기

Other scientific names: Cottus villosus, Hemitripterus cavifrons, Hemitripterus sinensis

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
58 open-data records from 1906 to 2010.
Species data updated November 3, 2026.

Log what you see on your next dive

The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.

Join the waitlist