Smallmouth squirrelfish (Sargocentron microstoma) fish species and information / pictures of Smallmouth squirrelfish - Sargocentron microstoma

Smallmouth squirrelfish (Sargocentron microstoma) fish species information

Scientific Name
Sargocentron microstoma

Common Name
Smallmouth squirrelfish

Biology
Dorsal spines (total): 11; Dorsal soft rays (total): 12-14; Anal spines: 4; Anal soft rays: 9 - 10. Body with red and white stripes of different widths; head reddish above, silvery below; faint red band from eye to angle of preopercle; spinous dorsal white, with a submarginal zone of red (Ref. 4201). Five oblique scale rows on cheek; body moderately elongated, depth 2.9-3.5 in SL; head length (HL) 2.8-3.4 in SL; snout length 3.9-4.35 in HL; interorbital width 4.15-4.5 in HL; maxillary reaching to about below front of iris, upper jaw length 2.85-3.15 in HL; premaxillary groove reaching to about a vertical at the front edge of orbit; anterior end of nasal bone rounded; 1-2 spinules at medial margin of nasal bone; small nasal fossa without spinules on its edge (except a 16.3 cm specimen from the Society Islands with 1 spinule); upper edge of suborbital bone weakly serrated, spineless laterally; short preopercular spine 1/4-1/3 orbit diameter, 6.15-7.95 in HL; 3rd-5th dorsa

Classification

Classified By
G?nther, 1859
Class
Ray-finned fishes (Actinopterygii)
Order
Sawbellies (Beryciformes)
Family
Squirrelfishes, soldierfishes (Holocentridae)

Distribution

Region
Indo-Pacific
Distribution
Indo-Pacific: Chagos Archipelago, Astove in Seychelles, and Maldives to the Hawaiian, Line, and Tuamoto Islands, north to the Ryukyu and Bonin Islands, south to Austral Islands; throughout Micronesia.
Range
35°N - 25°S

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
1 m
Depth To - meters
183 m
Zone
reef-associated
Environment
Marine; reef-associated; depth range 1 - 183 m (Ref. 1602), usually 1 - 35 m (Ref. 58302)
Trophic Level
3.61 s.e. 0.58 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
True

Physical Size and Genetics

Maximum Length
20.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Aquarium: public aquariums
Vulnerability
Low vulnerability (14 of 100)
Resilience
High, minimum population doubling time less than 15 months (K=1.00)
Threat To Humans
  Venomous (Ref. 2334)
IUCN Red List Status
  Not Evaluated