Chromis oligactis

Chromis oligactis Prokofiev & Astakhov, 2023

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drawing shows typical species in Pomacentridae.

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

Teleostei (teleosts) > Ovalentaria/misc (Various families in series Ovalentaria) > Pomacentridae (Damselfishes) > Chrominae
Etymology: Chromis: Greek, chromis = a fish, perhaps a perch (Ref. 45335); oligactis: Name 'oligactis' from a Greek word meaning 'few-rayed', in reference to the unusually low number of rays in P and in the soft parts of D and A, which is a characteristic feature of the new species.

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

Marine; reef-associated; non-migratory; depth range 30 - 40 m (Ref. 137825). Tropical

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

Western Central Pacific: Vietnam.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 7.9 cm SL male/unsexed; (Ref. 137825)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 14; Dorsal soft rays (total): 10; Anal spines: 2; Anal soft rays: 10; Vertebrae: 26. This species is distinguished from its congeners by the following set of characters: 14 spinous rays in D, 10 branched rays in D and A, 16-17 rays in P; 3 spiniform procurrent rays in the upper and lower lobe of C; 26 gill-rakers in the outer row on the first arch; 19 perforated scales in the anterior lateral line; maximum body depth, which fits 2.2 times in SL; a small dark spot at the base of P, without prominent light or black areas or a contrasting pattern on the body in preserved specimens (Ref. 137825).
Body shape (shape guide): short and / or deep; 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 : Allen, Gerald R. | Collaborators

Prokofiev, A.M. and D.A. Astakhov, 2023. New species of the Damselfish genus Chromis (Pomacentridae) from Vietnam. J. Ichthyol. 63(2):365-370. (Ref. 137825)

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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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 |