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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); tweddlei: Name 'tweddlei' in honor of Mr. Denis Tweddle for his marine and freshwater fishes collections from southern Africa.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin récifal; profondeur 214 - 219 m (Ref. 137466). Tropical
Western Indian Ocean: Mauritius.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 11.1 cm SL mâle / non sexé; (Ref. 137466)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 4; Rayons mous dorsaux (Total) : 13 - 14; Épines anales: 2; Rayons mous anaux: 13 - 14. This species is distinguished by the following set of characters: body depth 2.0-2.1 in SL; D XIV, 13-14; A II, 14 (rarely 13); pectoral-fin rays 20 (rarely 19); procurrent spiniform caudal-fin rays 2; tubed lateral-line scales 18-19; scales above lateral line to dorsal-fin origin 4; circumpeduncular scales 13-14; gill rakers 8-9 + 21-23, total gill rakers 29-32; maxilla ending at vertical at anterior margin of orbit; black caudal band tapering anteriorly (anterior edge v-shaped) the full length of the caudal peduncle; caudal fin yellow with black posterior margin; distal third of anal fin blackish; dorsal fin yellow; upper half of pectoral fin yellow (Ref. 137466).
Body shape (shape guide): short and / or deep; Cross section: compressed.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Lisher, M.W., S.T.F.L. Viana and O. Gon, 2024. Chromis tweddlei, a new deep-water species of damselfish (Pomacentridae) from the Cargados Carajos Bank, southwestern Indian Ocean. J Fish Biol. 106:1012-1020. (Ref. 137466)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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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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