Calotomus japonicus
No common name
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Scaridae (Parrotfishes)
Calotomus
Calotomus japonicus
Description
This species account was compiled from
FishBase (Froese, R. and D. Pauly. Editors. 2025. FishBase. World Wide Web electronic publication. www.fishbase.org, version 04/2025.)
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Characters
Body shape: short and / or deep. 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.
Distribution
Northwest Pacific: southern Japan, and at least as far as Tokyo, and the adjacent Asian mainland.
Habitat Associations
Marine. reef-associated.
Biology
Apparently confined to coastal waters in rocky areas with seaweeds (Ref. 9710).
Max length: 39.0 cm TL.
Reproductive mode: protogyny; fertilization: external; nonguarders. Pelagic spawner.
IUCN Red List Status: Least Concern (LC), assessed 2009-09-17. Resilience: Medium (Preliminary K or Fecundity.).
Commercial or Environmental Importance
Fisheries: commercial; gamefish.
References
Bruce, R.W. and J.E. Randall (1985) A revision of the Indo-West Pacific parrotfish genera Calotomus and Leptoscarus (Scaridae: Sparisomatinae). Indo-Pac. Fish. (5):32 p.
Lieske, E. and R. Myers (1994) Collins Pocket Guide. Coral reef fishes. Indo-Pacific & Caribbean including the Red Sea. Haper Collins Publishers, 400 p.
Kusen, J.D. and A. Nakazono (1991) Protogynous hermaphroditism in the parrotfish, Calotomus japonicus. Jap. J. Ichthyol. 38(1):41-45.
Comments On Calotomus japonicus