Korean flounder

Glyptocephalus stelleri

Fish

Usual depth86–408 m
Water temperature4–19 °C
Best monthsJuly and September
How commonOccasional

About this species

The blackfin flounder is a flatfish of the family Pleuronectidae. It is a demersal fish that lives in temperate waters at depths of between 8 and 1,600 metres, though it is most commonly found between 15 and 800 metres. Its native habitat is the northern Pacific, from the Sea of Japan to the Strait of Tartary and southern Kuril Islands and out into the Bering Sea. It grows up to 52 centimetres (20 in) in length, and can weigh up to 1.5 kilograms (3.3 lb). Maximum reported lifespan is 23 years.

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

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 0 records
February: 0 records
March: 0 records
April: 4 records
May: 3 records
June: 6 records
July: 18 records
August: 3 records
September: 19 records
October: 5 records
November: 2 records
December: 0 records

Depth and water temperature

Depth

Mostly recorded at 86–408 m · Deepest record: 594 m

40–50 m: 1 records
50–60 m: 2 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 3 records
90–100 m: 0 records
100–110 m: 1 records
110–120 m: 1 records
120–130 m: 5 records
130–140 m: 0 records
140–150 m: 1 records
150+ m: 40 records

Water temperature

Recorded in surface water of 4–19 °C

4–6 °C: 69 records
6–8 °C: 4 records
8–10 °C: 0 records
10–12 °C: 6 records
12–14 °C: 11 records
14–16 °C: 6 records
16–18 °C: 17 records
18–20 °C: 12 records

Names and classification

English: Korean flounder

Names in 1 more languages

Japanese: ヒレグロ

Other scientific names: Glyptocephalus ostroumowi, Glyptocephalus sasae, Microstomus hireguro, Microstomus stelleri

Similar species

Glyptocephalus kitaharae
Kamchatka flounder
Atheresthes evermanni
Roughscale sole
Clidoderma asperrimum
Shotted halibut
Eopsetta grigorjewi
Slime flounder
Microstomus achne
Pointhead flounder
Cleisthenes pinetorum

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.
128 open-data records from 1900 to 2012.

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