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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); torquata: Name from Latin: 'torquata' meaning adorned with a collar, referring to the diagnostic dark band behind the head.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin récifal; profondeur 10 - 40 m (Ref. 118302). Tropical
Western Indian Ocean: restricted to the islands of Mauritius and Réunion.
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 9.2 cm SL mâle / non sexé; (Ref. 118302); 8.7 cm SL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 8; Rayons mous dorsaux (Total) : 11; Épines anales: 2; Rayons mous anaux: 11; Vertèbres: 26. This species is distinguished be the following characters: D XIII,11; A II,10-11 (usually 11); pectoral rays 19-20 (usually 19); spiniform caudal rays 3; tubed lateral-line scales (17-19); gill rakers 7-8 + 20-22, total rakers 28-30; body depth 2.3-2.4 in SL. Colouration: when alive, mainly charcoal grey to dark greenish brown, whitish to yellowish anteriorly (behind pectoral fin) and ventrally; a broad black band behind head (or slightly overlapping opercle), from side of nape to just behind pectoral-fin base; cheek, opercle, and side of snout mainly white (except in yellow individuals), except black patch around upper margin of eye; iris yellow-orange; caudal fin mainly brown with darker band along dorsal and ventral edge of lobes; juvenile is bluish with prominent black band behind the head and bright yellow caudal lobes with yellow on upper lobe extending onto dorsal portion of caudal peduncle (Ref. 118302).
Cross section: compressed.
Usually found in habitats consisting of outer, seaward reefs at depths of about 10-40 m (Ref. 118302).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Allen, G.R., 2018. Chromis torquata, a new species of damselfish (Pomacentridae) from Mauritius and Réunion. aqua, Int. J. Ichthyol. 24(1):15-22. (Ref. 118302)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01778 (0.00800 - 0.03953), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.0 ±0.1 se; based on size and trophs of closest relatives
Résilience (Réf.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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