Violet squirrelfish (Sargocentron violaceum) fish species and information / pictures of Violet squirrelfish - Sargocentron violaceum

Violet squirrelfish (Sargocentron violaceum) fish species information

Scientific Name
Sargocentron violaceum

Common Name
Violet squirrelfish

Biology
Dorsal spines (total): 11; Dorsal soft rays (total): 12-15; Anal spines: 4; Anal soft rays: 9. Body color brownish to purplish red; head primarily red; upper part of opercular membrane blackish; each scale with vertical silvery white line. Four to five oblique scale rows on cheek; body depth 2.3-2.7 in SL; head length (HL) 2.4-2.85 in SL; snout length 3.75-4.35 in HL; maxilla extending posteriorly from below front of pupil to below center of the eye, upper jaw length 2.7-2.85 in HL; premaxillary groove about a vertical at front edge of orbit; anterior end of nasal bone with 2 diverging spines; medial margin of nasal bone spineless (however, a Seychelles specimen 20.6 cm has one small spinule on the edge); 1-3 spinules on anterior and posterior margins of nasal fossa; suborbital bones' upper edge smooth anteriorly, becoming slightly serrate posteriorly (serrae as recumbent spinules); adults' preopercular spines long, 2.85-3.8 in HL (at least equal to orbit diameter). 2

Classification

Classified By

Bleeker, 1853

Class

Ray-finned fishes (Actinopterygii)

Order

Sawbellies (Beryciformes)

Family

Squirrelfishes, soldierfishes (Holocentridae)

Distribution

Region

Indo-Pacific

Distribution

Indo-Pacific: Aldabra and the Laccadive Islands (Ref. 4201) to the Society Islands (Ref. 9710), north to Ryukyu Islands, south to the southern Great Barrier Reef; Palau to the eastern Caroline and Marshall Islands in Micronesia.

Range

30°N - 24°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1 m

Depth To - meters

30 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 1 - 30 m (Ref. 48635), usually 1 - 15 m (Ref. 27370)

Trophic Level

3.55 s.e. 0.59 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

False

Physical Size and Genetics

Maximum Length

45.0 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

Unknown

Vulnerability

Low to moderate vulnerability (30 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Venomous (Ref. 2334)

IUCN Red List Status

Not Evaluated