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Smallmouth squirrelfish

Sargocentron microstoma

  • Fish
  • IUCN: Least concern
  • Usual depth0–14 m
  • Water temperature23–30 °C
  • Best monthsJune, July, and August
  • How commonOccasional
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About this species

Sargocentron microstoma, the fine-lined squirrelfish, slender squirrelfish or smallmouth squirrelfish, is a member of the family Holocentridae. It has a wide range throughout the Indo-Pacific from the Chagos Archipelago, Seychelles, and the Maldives to the Hawaiian Islands, Line Islands, and the Tuamotus Archipelago, north to the Ryukyu Islands and Bonin Islands, south to Austral Islands and throughout Micronesia. It lives near reefs usually at depths between 1–35 m (3.3–114.8 ft), but can be found as deep as 183 m (600 ft). During the day it hides in crevices, especially near Acropora and Pocillopora. It is a nocturnal predator, feeding on crustaceans, worms, and fishes. It can reach sizes of up to 20 cm (7.9 in) TL and has a venomous preopercle.

Text from the Wikipedia article “Sargocentron microstoma”, 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: 14 records
  • February: 10 records
  • March: 10 records
  • April: 17 records
  • May: 49 records
  • June: 63 records
  • July: 99 records
  • August: 70 records
  • September: 27 records
  • October: 42 records
  • November: 21 records
  • December: 10 records

Depth and water temperature

Depth

Mostly recorded at 0–14 m · Deepest record: 29.2 m

  • 0–10 m: 317 records
  • 10–20 m: 66 records
  • 20–30 m: 9 records

Water temperature

Recorded in surface water of 23–30 °C

  • 22–24 °C: 6 records
  • 24–26 °C: 11 records
  • 26–28 °C: 146 records
  • 28–30 °C: 298 records

Names and classification

English
Smallmouth squirrelfish, Fine-lined Squirrelfish, Silver Squirrelfish, Slender Squirrelfish, smallmouth squirrelfish, Smallmouth Squirrelfish
Names in 3 more languages
French
Poisson-écureuil à petite bouche
Japanese
Himebisu, ヒメエビス
Simplified Chinese
小口棘鳞鱼

Other scientific names: Adioryx microstomus, Holocentrum bleekeri, Holocentrum microstoma, Holocentrus bleekeri, Holocentrus microstoma, Holocentrus microstomus, Sargocentron microstomum, Sargocentron microstomus, Sargocentron mitrostomus

Similar species

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).
  • 1,077 open-data records from 1859 to 2022.

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