Scolopsis japonica, Javanese monocle bream

Scolopsis japonica (Bloch, 1793)

Javanese monocle bream
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Image of Scolopsis japonica (Javanese monocle bream)
Scolopsis japonica
Picture by Cornish, A.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Eupercaria/misc (Various families in series Eupercaria) > Nemipteridae (Threadfin breams, Whiptail breams)
Etymology: Scolopsis: Name from the Greek masculine noun 'skolos' meaning 'thorn' and suffix '-opsis' (from Greek feminine n. 'opsis' meaning 'aspect', 'appearance') meaning ‘thorny appearance’ presumably referring to 'les dentelures de la préopercule, en ont aussi, et même d'épineuses, aux sous-orbitaires' mentioned by Cuvier (1814) in his designation of the genus. Name ending in -'opsis' are treated as feminine according to ICZN 1999: Article 30.1.2 (Ref. 130620).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated. Tropical

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Pacific: from southern Japan, Taiwan, Hong Kong, southern China and Vietnam, south to n. and nw. Australia; also Singapore, Gulf of Thailand, South China Sea, East Malaysia, w. Indonesia, and the Philippines.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 16.1 cm SL male/unsexed; (Ref. 130620)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 10; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 7; Vertebrae: 22. This species is distinguished by the following set of characters: head scaly except for subopercle (naked) with numerous small pores; scales on top of head reaching forward to between the anterior nostrils and snout tip; lower margin of eye tangent to a line from snout tip to upper pectoral-fin base; suborbital with a large retrorse spine (a small antrorse spine also sometimes present on third infraorbital, immediately above suborbital spine); posterior margin of preopercle serrate or denticulate, the lower edge smooth; second anal-fin spine is longer and more robust than first or third anal-fin spines; most body scales, except for breast and caudal peduncle, are with greenish yellow spot (spots darker in live fishes); caudal peduncle yellowish; a broad white bar from nape onto operculum; suborbital with obscure, rectangular, white patch; a white band beneath lateral line is never present; upper limb of opercular margin blackish, lower limb is reddish orange; upper base of pectoral fin has a small wedge-shaped dark spot; fins are yellow (Ref. 130620).
Body shape (shape guide): fusiform / normal; Cross section: compressed.

Biology     Glossary (e.g. epibenthic)

Usually found on sand or mud bottoms near reefs in depths up to about 30 m (Ref. 130620).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Russell, B.C., S.V. Bogorodsky, A.O. Mal, K.K. Bineesh and T.J. Alpermann, 2022. The taxonomic identity of the monocle bream Scolopsis vosmeri species complex (Perciformes: Nemipteridae), with comments on molecular phylogenetic relationships within the genus Scolopsis. Zootaxa 5105(4):501-538. (Ref. 130620)

IUCN Red List Status (Ref. 130435: Version 2025-2)

  Least Concern (LC) ; Date assessed: 12 April 2023

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | National databases | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search |