Actinoptérygiens (poissons à nageoires rayonnées) >
Perciformes (Perch-likes) >
Pomacentridae (Damselfishes) > Pomacentrinae
Etymology: Dascyllus: Greek, daskillys, -on = a kind of fish (Ref. 45335).
Environnement / Climat / Gamme
Écologie
; marin récifal; non migrateur; profondeur 1 - 55 m (Ref. 7247). Tropical, preferred ?; 32°N - 36°S, 24°E - 128°W
Indo-Pacific: Red Sea and East Africa to the Line and Pitcairn islands, north to southern Japan, south to Sydney, Australia. Not found in the Hawaiian and Marquesan islands.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 14.0 cm TL mâle / non sexé; (Ref. 89972)
Épines dorsales (Total): 12; Rayons mous dorsaux (Total): 14-16; Épines anales 2; Rayons mous anaux: 14 - 15. Juveniles overall black with scale centers bluish; white blotch on forehead and upper sides; all fins black except the transparent pectoral and outer portion of soft dorsal rays. Geographic and behavioral color of adults variable; no spot on forehead; spot on upper sides very reduced; head and fins normally black; scales with black margins. Margins of preorbital, suborbital and preoperculum finely serrated (Ref. 2746). Nuptial fish generally paler color. Body depth 1.4-1.6 in SL (Ref. 90102).
Adults inhabit coral and rocky reefs, juveniles often commensal with large sea anemones, sea urchins, or small coral heads (Ref. 4391, 48636). They occur in small to large aggregations. Stomach contents include algae, copepods, and other planktonic crustaceans (Ref. 7247). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205). Courtship characterized by male 'signal-jumping'. Captive pair reported to spawn thrice monthly with a total of 17 over a 7-month period (Ref. 2856). While protogyny was originally proposed for this species, recent studies confirmed gonochorism in the form of non-functional hermaphroditism (Ref. 103751).
Allen, G.R., 1991. Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p. (Ref. 7247)
Statut dans la liste rouge de l'IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: intérêt commercial mineur; Aquarium: Commercial
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03467 (0.02159 - 0.05569), b=2.99 (2.86 - 3.12), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Niveau trophique (Ref.
69278): 2.8 ±0.10 se; Based on food items.
Résilience (Ref.
69278): Haut, temps minimum de doublement de population inférieur à 15 mois (Fec=20,000-25,000).
Vulnérabilité (Ref.
59153): Low to moderate vulnerability (25 of 100) .