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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); norfolkensis: Named for its type locality, Norfolk Island in the southwestern Pacific Ocean.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien rifbewoner; diepte 5 - 40 m (Ref. 125611). Subtropical
Southwest Pacific: northern Tasman Sea and southern Coral Sea region at northern New Zealand, Norfolk Island, New Caledonia, and the Chesterfield Islands; including New South Wales, Australia.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 8.3 cm SL mannelijk / geslacht onbekend; (Ref. 125611)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 13 - 14; Dorsale zachte stralen (totaal) : 12 - 13; Anale stekels: 2; Anale zachte stralen: 10 - 11; Wervels: 26. This species is distinguished by the following set of characters: D XII I- XIV,12-13 (usually XIII,12); A II,10-11 (usually II,10); pectoral-fin rays 18-20 (usually 19); spiniform caudal-fin rays 2; tubed lateral-line scales 17-19; total gill rakers on first branchial arch 30-34 (usually 31-33); body depth 2.0-2.4 (mean 2.2) in SL. Colouration: adult color in life bicolored, light to dark brown to yellowish on upper half and white on lower half, transition between two halves more or less abrupt with slightly diagonal emarcation extending from lower rear corner of eye to conspicuous small, rounded, white spot, half pupil size or less, at base of last dorsal-fin rays; caudal fin is translucent whitish to bluish with broad black bands along upper and lower margins with a narrow blue-white edge (Ref. 125611).
Usually found on outer reef slopes around boulders or occasionally on coral patch reefs (Ref. 125611).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Allen, G.R. and M.G. Allen, 2021. Two new species of Chromis (Teleostei: Pomacentridae) from northwestern Australia and the southwestern Pacific Ocean, previously part of C. fumea (Tanaka, 1917). J. Ocean Sci.Foundation 38:78-103. (Ref. 125611)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00930 - 0.02579), b=3.12 (2.97 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.0 ±0.1 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
