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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); sahulensis: Named for its geographic range, limited to the Sahul Shelf, portion of the continental shelf lying off the northwestern coast of Australia.
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin récifal; profondeur 15 - 80 m (Ref. 125611). Subtropical
Eastern Indian Ocean: northwestern Australia.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 6.0 cm SL mâle / non sexé; (Ref. 125611)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 13; Rayons mous dorsaux (Total) : 10 - 13; Épines anales: 2; Rayons mous anaux: 9 - 11; Vertèbres: 26. This species is distinguished by the following set of characters: D XIII,10-13 (usually XIII,12); A II,9-11 (usually II,10); pectoral-fin rays 17-20 (usually 18-19); spiniform caudal-fin rays 2; tubed lateral-line scales 17-19 (rarely 17); total gill rakers on first branchial arch 29-34 (usually 31-32); body depth 2.1-2.4 (mean 2.2) in SL. Colouration: in life yellowish brown on dorsal head, nape, spinous dorsal fin, and back, grading to gray-brown on sides, with a prominent saddle-like white spot near the base of last dorsal-fin rays extending onto upper caudal peduncle; brownish bands edged with white along the upper and lower margins of caudal fin (Ref. 125611).
Usually found on the outer slope of coral reefs and on gradually sloping or flat bottoms of trawling grounds, presumably around rock outcrops, sponges, and sea fans (Ref. 125611).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00571 - 0.02773), b=3.03 (2.84 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.0 ±0.1 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
