Cycloteuthis sirventi

Cephalopods
IUCN: Not evaluated

Usual depth75–950 m
Water temperature13–28 °C
Best monthsMarch, April, and May
How commonRare

About this species

Cycloteuthis sirventi, commonly known as Sirvent's disc-fin squid, is a species of squid in the family Cycloteuthidae, of which it is the most common. It is possible that C. akimushkini is a junior synonym of C. sirventi. The species occurs in the tropical to polar western Atlantic Ocean. It has a maximum mantle length of 500mm.

Text from the Wikipedia article “Cycloteuthis sirventi”, 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: 2 records
February: 2 records
March: 5 records
April: 5 records
May: 4 records
June: 0 records
July: 2 records
August: 1 records
September: 0 records
October: 0 records
November: 0 records
December: 0 records

Depth and water temperature

Depth

Mostly recorded at 75–950 m · Deepest record: 1,300 m

50–60 m: 1 records
60–70 m: 0 records
70–80 m: 2 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110–120 m: 0 records
120–130 m: 1 records
130–140 m: 1 records
140–150 m: 3 records
150–160 m: 1 records
160+ m: 8 records

Water temperature

Recorded in surface water of 13–28 °C

12–14 °C: 1 records
14–16 °C: 1 records
16–18 °C: 1 records
18–20 °C: 2 records
20–22 °C: 6 records
22–24 °C: 8 records
24–26 °C: 1 records
26–28 °C: 2 records
28–30 °C: 2 records

Names and classification

Names in 2 more languages

Japanese: ウチワイカ, トガリウチワイカ
Thai: ปลาหมึกครีบจานหางแหลม

Similar species

Discoteuthis laciniosa

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).
24 open-data records from 1968 to 2005.
Species data updated November 1, 2026.

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