Common name: Smallmouth squirrelfish

Scientific name: Sargocentron microstoma (Günther, 1859)

General information

The Hawaiian Longspine Squirrelfish, Sargocentron microstoma, is a nocturnal species known for its vibrant red color and distinctive long spines on the dorsal fin. This fish is a member of the family Holocentridae and is appreciated for its unique appearance and behavior in the home aquarium.

Details

Recommended minimum tank volume
150 liter (40 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 27 °C (75 to 81 °F)
Acidity
pH 8.1 to 8.4
Average size
15 cm (6″)
Care level
Moderate to easy Prefers live rock for hiding
Diet
Carnivore Enjoys mysis and brine shrimp
Social
Solo Territorial, best kept alone
Reefsafe
No May nip at small fish/inverts
Aggression
Semi aggresive Can be territorial
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Squirrelfish
    Beryciformes
  5. Family
    Squirrelfish
    Holocentridae
  6. Genus
    Squirrelfish
    Sargocentron
  7. Species
    Smallmouth squirrelfish
    Sargocentron microstoma (Günther, 1859)
  8. Synonyms
    Adioryx microstomus (Günther, 1859)
    Holocentrum microstoma Günther, 1859
    Holocentrus microstomus Günther, 1859
    Sargocentron mitrostomus (Günther, 1859)

Care

Sargocentron microstoma requires an aquarium with plenty of hiding places and a peaceful environment. It is a hardy species but can be shy, so it's important to provide a dimly lit tank with caves and overhangs. This fish is carnivorous and thrives on a diet of meaty foods such as shrimp, squid, and various prepared frozen foods.

Reproduction

In the wild, squirrelfish are known to spawn in groups, releasing eggs and sperm into the water column where fertilization occurs externally. In the home aquarium, breeding is less common, but providing a large, well-maintained tank with multiple individuals may encourage spawning behavior.

Habitat

The Hawaiian Longspine Squirrelfish is found in the tropical waters of the Central Pacific, particularly around the Hawaiian Islands. It prefers reef environments with plenty of crevices and overhangs, typically at depths ranging from shallow waters to about 183 meters (600 feet).