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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.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina revassocierade; ej vandrande; djupintervall 30 - 40 m (Ref. 137825). Tropical
Western Central Pacific: Vietnam.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 7.9 cm SL hane/ej könsbestämd; (Ref. 137825)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 14; Mjukstrålar i ryggfenan (totalt) : 10; Taggstrålar i analfenan: 2; Mjukstrålar i analfenan: 10; Ryggkotor: 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.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2)
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: saknar intresse
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trofisk nivå (Ref.
69278): 3.0 ±0.1 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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