Slender fusilier

Gymnocaesio gymnoptera

Fish
IUCN: Least concern

Usual depth5–25 m
Water temperature24–30 °C
Best monthsFebruary and March
How commonRare

Photo credit: (c) Jay Brasher, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

The slender fusilier is a species of marine ray-finned fish, a fusilier belonging to the family Lutjanidae. It is native to tropical reefs in the Indian Ocean and the western Pacific Ocean, it is of minor importance to local commercial fisheries. This species is the only known member of its genus.

Text from the Wikipedia article “Slender fusilier”, 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: 4 records
February: 53 records
March: 58 records
April: 2 records
May: 6 records
June: 2 records
July: 6 records
August: 3 records
September: 4 records
October: 9 records
November: 10 records
December: 3 records

Depth and water temperature

Depth

Mostly recorded at 5–25 m · Deepest record: 79.6 m

0–10 m: 33 records
10–20 m: 48 records
20–30 m: 22 records
30–40 m: 2 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 2 records

Water temperature

Recorded in surface water of 24–30 °C

24–26 °C: 6 records
26–28 °C: 99 records
28–30 °C: 15 records

Photos

Names and classification

English: Slender fusilier, slender fusilier

Names in 3 more languages

Spanish: fusilero elegante
French: Fusilier Elégant, Fusilier élégant
Japanese: Hosotakasago, ホソタカサゴ

Other scientific names: Caesio gymnopterus, Gymnocaesio gymnopterus

Similar species

Red-bellied Fusilier
Caesio cuning
Double-lined fusilier
Pterocaesio digramma
Banana fusilier
Pterocaesio pisang
Dark-banded fusilier
Pterocaesio tile
Blue and gold fusilier
Caesio caerulaurea
Lunar fusilier
Caesio lunaris

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).
173 open-data records from 1856 to 2023.
Species data updated November 3, 2026.

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