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Epaulette surgeonfish (Acanthurus nigricauda) fish species and information / pictures of Epaulette surgeonfish - Acanthurus nigricauda

Epaulette surgeonfish (Acanthurus nigricauda) fish species information

Scientific Name
Acanthurus nigricauda

Common Name
Epaulette surgeonfish

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 25-28; Anal spines: 3; Anal soft rays: 23 - 26. Color in life dark brown without lines on body or spots on head (one phase is purplish grey); horizontal black band behind upper gill opening absent on juveniles

Classification

Classified By

Duncker & Mohr, 1929

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 Tuamoto Islands, north to Ryukyu Islands, south to southern Great Barrier Reef. Not occurring in the Red Sea.

Range

30°N - 24°S, 39°E - 143°W

Environment

Climate

Tropical

Water Temperature From

23 °C

Water Temperature To

28 °C

Depth From - meters

1 m

Depth To - meters

30 m

Zone

reef-associated

Environment

Marine; brackish; reef-associated; depth range 1 - 30 m (Ref. 9710), usually 2 - 15 m (Ref. 27115)

Trophic Level

2.99 s.e. 0.40 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

40.0 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

Fisheries: commercial; aquarium: commercial

Vulnerability

Low vulnerability (25 of 100)

Resilience

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

Threat To Humans

Poisonous to eat (Ref. 4795)

IUCN Red List Status

Not Evaluated