Pseudoplesiops occasus, Sunset dottyback

Pseudoplesiops occasus Fujiwara & Motomura, 2025

Sunset dottyback
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drawing shows typical species in Pseudochromidae.

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

Teleostei (teleosts) > Ovalentaria/misc (Various families in series Ovalentaria) > Pseudochromidae (Dottybacks) > Pseudoplesiopinae
Etymology: Pseudoplesiops: Greek, pseudes = false + Greek, plesios = near (Ref. 45335); occasus: Name 'occasus' from the Latin word meaning 'sunset', in reference to the red or reddish-orange body and fins, diagnostic of the new species.

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

Marine; reef-associated; depth range 10 - 15 m (Ref. 138052). Subtropical

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Northwest Pacific: Japan.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.7 cm SL male/unsexed; (Ref. 138052)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 1; Dorsal soft rays (total): 22; Anal spines: 1; Anal soft rays: 13 - 14. This species is distinguished from its congeners by the following set of characters: D I, 22; A I, 13 or 14; precaudal vertebrae 11; scales in lateral series 27 or 28; predorsal scales 9-11; predorsal scales anterior to anterodorsal parietal pores 4 or 5; scales with distinct circular and radial striae (surrounding the former); dorsal- and anal-fin membranous margins deeply incised between rays; body depth moderate, its depth at dorsal-fin origin 23.6-25.2% of SL; snout moderate, its length 5.3-5.9% of SL; prepelvic length 27.6-31.6% of SL; anal-fin base length 30.2-33.3% of SL; body and all fins (except for distal edges and pectoral fin) generally red or reddish-orange when fresh; and small, dorsoventrally elongated black blotch just behind eye (Ref 138052).
Body shape (shape guide): elongated; Cross section: compressed.

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Fujiwara, K., A.C. Gill, H. Endo, Shibukawa. K. and H. Motomura, 2025. Taxonomic review of the dottyback genus Pseudoplesiops in Japanese waters, with descriptions of two new species (Pseudochromidae: Pseudoplesiopinae). Ichthyol. Res. 1-22. (Ref. 138052)

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

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
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 | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search |