Scientific Name
Calotomus japonicus

Common Name
Japanese parrotfish

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 9 - 10; Vertebrae: 25. Flexible to semi-pungent dorsal spines; a dark central blotch on inter spinous membrane of dorsal spines I and II. Area circumscribed by pectoral fin unspotted. Rounded caudal fins at all sizes. Reddish brown in color when fresh with white and pale gray scale markings. Reddish pelvic fins with whitish blotches. Number of upper jaw teeth initially increasing with size. Yellow iris, blotched with dark brown. Lateral line interrupted.

Classification

Classified By

Valenciennes, 1840

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Parrotfishes (Scaridae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: southern Japan, and at least as far as Tokyo, and the adjacent Asian mainland.

Range

40°N - 30°N

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

reef-associated

Environment

Marine; reef-associated

Trophic Level

2 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

False

Physical Size and Genetics

Maximum Length

39.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; gamefish: yes

Vulnerability

Low to moderate vulnerability (29 of 100)

Resilience

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

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)