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Chronixis surgeonfish (Acanthurus chronixis) fish species and information / pictures of Chronixis surgeonfish - Acanthurus chronixis

Chronixis surgeonfish (Acanthurus chronixis) fish species information

Scientific Name
Acanthurus chronixis

Common Name
Chronixis surgeonfish

Biology
Dorsal spines (total): 8; Dorsal soft rays (total): 26; Anal spines: 3; Anal soft rays: 24. Caudal fin lunate. Life colour unknown. Preserved specimen is dark brown with two small oval spots, one above and the other slightly behind the upper end of the gill opening, and a dark brown band at the base of the dorsal fin.

Classification

Classified By

Randall, 1960

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Surgeonfishes, tangs, unicornfishes (Acanthuridae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: Kapingamarangi, Caroline Islands. Reports from other areas are probably misidentifications of the juvenile stages of Acanthurus pyroferus (J.E. Randall, pers. comm.).

Range

2°N - 1°N

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

6 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range ? - 6 m (Ref. 58018)

Trophic Level

2.09 s.e. 0.00 Based on size and trophs of closest relatives

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

Unknown 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: of no interest; aquarium: commercial

Vulnerability

Moderate vulnerability (41 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated