Blackfin Triplefin

Helcogramma fuscopinna

Fish
IUCN: Least concern

Usual depth3–18 m
Water temperature23–29 °C
Best monthsApril and May
How commonRare

About this species

The blackfin triplefin is a species of triplefin blenny in the genus Helcogramma. It was described by Wouter Holleman in 1982. This species occurs between 0 and 50 centimetres in the western Indian Ocean along the eastern coast of Africa from KwaZulu Natal to northern Kenya and east to the Maldives, living on rock surfaces and beneath ledges.

Text from the Wikipedia article “Blackfin triplefin”, 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: 1 records
February: 0 records
March: 1 records
April: 24 records
May: 17 records
June: 10 records
July: 8 records
August: 3 records
September: 8 records
October: 13 records
November: 8 records
December: 3 records

Depth and water temperature

Depth

Mostly recorded at 3–18 m · Deepest record: 125 m

0–10 m: 36 records
10–20 m: 20 records
20–30 m: 4 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110+ m: 1 records

Water temperature

Recorded in surface water of 23–29 °C

22–24 °C: 3 records
24–26 °C: 47 records
26–28 °C: 33 records
28–30 °C: 17 records

Names and classification

English: Blackfin Triplefin, Dusky-finned triplefin

Similar species

Candystriped Triplefin
Helcogramma striata
Red-eye Threefin
Helcogramma ellioti
Triangle Triplefin
Helcogramma inclinata
Whitespot Triplefin
Helcogramma albimacula
Neglected Triplefin
Helcogramma desa
Dusky-finned triplefin
Helcogramma fuscipectoris

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).
121 open-data records from 1952 to 2023.
Species data updated October 30, 2026.

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