Sargocentron microstoma

{{Short description|Species of fish}}

{{Speciesbox

| image = Sargocentron microstoma (Smallmouth squirrelfish) in Acropora formosa (Staghorn coral).jpg

| image_caption =

| status = LC

| status_system = IUCN3.1

| status_ref = {{Cite journal | author = Williams, I. | author2 = Greenfield, D. | name-list-style = amp | title = Sargocentron microstoma | journal = The IUCN Red List of Threatened Species | volume = 2016 | page = e.T67902908A115444559 | publisher = IUCN | date = 2016 | url = http://www.iucnredlist.org/details/67902908/0 | doi = 10.2305/IUCN.UK.2016-1.RLTS.T67902908A67906345.en | access-date = 23 December 2017| doi-access = free }}

| genus = Sargocentron

| species = microstoma

| authority = (Günther, 1859)

| synonyms =

Holocentrum microstoma Günther, 1859

Adioryx microstomus (Günther, 1859)

Holocentrus microstoma Günther, 1859

Holocentrus microstomus Günther, 1859

Sargocentron microstomum (Günther, 1859)

Sargocentron microstomus (Günther, 1859)

Sargocentron mitrostomus (Günther, 1859)

Holocentrum argenteum (non Valenciennes, 1831)

}}

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 {{convert|1|-|35|m|ft|abbr=on}}, but can be found as deep as {{convert|183|m|ft|abbr=on}}. 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 {{convert|20|cm|in|abbr=on}} TL and has a venomous preopercle.{{FishBase |genus=Sargocentron |species=microstoma |year=2017 |month=January}}