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Setting up your tank

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Humpback unicornfish (Naso brachycentron) fish species and information / pictures of Humpback unicornfish - Naso brachycentron

Humpback unicornfish (Naso brachycentron) fish species information

Scientific Name
Naso brachycentron

Common Name
Humpback unicornfish

Biology
Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 28-30; Anal spines: 2; Anal soft rays: 27 - 28. Distinctive humped back; horn only in adult males. A few scattered small dark-edged pale spots on postorbital head and body above pectoral fins. No white margin posteriorly on caudal fin. Profile of snout from mouth to eye strongly sloping, forming an angle of about 40? to horizontal axis of body (Ref 9808).

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 to the Marquesan and Society islands, north to the Ryukyu Islands, south to Vanuatu.

Range

33°N - 25°S

Environment

Climate

Tropical

Water Temperature From

25 °C

Water Temperature To

28 °C

Depth From - meters

2 m

Depth To - meters

20 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 2 - 20 m (Ref. 27115), usually 15 - 20 m (Ref. 48637)

Trophic Level

2.67 s.e. 0.29 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

90.0 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: commercial

Vulnerability

High to very high vulnerability (67 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (K=0.429; Tmax=31)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated