Scientific Name
Acanthurus dussumieri

Common Name
Eyestripe surgeonfish

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 25-27; Anal spines: 3; Anal soft rays: 24 - 26. Pale brown body; broader, irregular lines on head; orange band between eyes, continued behind each eye to gill cover. Each side of caudal peduncle with single, sharp, forward-pointing erectile spine; spine largely covered by cream sheath; groove surrounded by a black area. Dorsal fin with soft part having longer base than spinous part. Minute scales. Gill rakers 22-26 in anterior row, 23-27 in posterior row. Caudal fin lunate in adults (Ref. 1602).

Classification

Classified By

Valenciennes, 1835

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Surgeonfishes, tangs, unicornfishes (Acanthuridae)

Distribution

Region

Indo-Pacific

Distribution

Indo-Pacific: East Africa (including the Mascarene Islands, Ref. 37792) to the Hawaiian and Line islands, north to southern Japan, south to Rowley Shoals, southern Great Barrier Reef and Lord Howe Island. Absent from most of central Pacific.

Range

29°N - 36°S, 0°W - 155°W

Environment

Climate

Tropical

Water Temperature From

24 °C

Water Temperature To

28 °C

Depth From - meters

4 m

Depth To - meters

131 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 4 - 131 m (Ref. 9710), usually 9 - 130 m (Ref. 27115)

Trophic Level

2.02 s.e. 0.05 Based on diet studies.

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

54.0 cm

Common Length

35.0 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

Fisheries: minor commercial; aquarium: commercial

Vulnerability

Moderate vulnerability (36 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (tmax=28; k=0.29)

Threat To Humans

Harmless (Ref. 4887)

IUCN Red List Status

Not Evaluated