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Ovalentaria/misc (Various families in series Ovalentaria) >
Pomacentridae (Damselfishes) > Chrominae
Etymology: Azurina: Latin, azurinus = blue, pale blue; the name of Leuciscus caeruleus, blue Roach; 1600 (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي وابسته به آب سنگ; غير مهاجر; تغييرات عمق 5 - 30 m (Ref. 28023). Tropical; 1°N - 1°S
Eastern Central Pacific: Cocos and the Galapagos Islands. This species has not been seen since the 1982/83 El Niño event (Ref. 27438).
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 15.0 cm SL جنس نر / بدون خواص جنسي; (Ref. 28023)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
خارهاي باله پشتي (کل) : 13; شعاع نرم باله پشتي (کل) : 10 - 11; خارهاي باله مخرجي: 2; شعاع نرم باله مخرجي: 11 - 12. Color olive-gray with a light-blue tint, silver on the ventral side; snout dusky, a black spot at pectoral fin base; pale gray pelvic and anal fins, dusky dorsal fin. Body more slender compared to other Galápagos damselfish. Preorbital bone smooth without a notchlike projection; edge of preopercle irregular, weakly serrate. Lateral line complete and conspicuous (Ref. 28023).
Apparently this species prefers open water near drop-offs, although individuals are found in a variety of inshore habitats to depths of 30 meters. It is not a common species and resident aggregations have strong preferences for specific sites. Feeds mainly on plankton in the water column, usually in heterotypic aggregations with Chromis atrilobata. 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). Prior to the 1982-83 El Niño, a small aggregation frequented the shallow water just west of Pinnacle Rock at Bartolomé. But despite intensive observations during the decade after this event, no records of this species were made (Ref. 28023).
Life cycle and mating behavior
Maturities | تولید مثل | Spawnings | Egg(s) | Fecundities | توزاد ( لارو)
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).
Grove, J.S. and R.J. Lavenberg, 1997. The fishes of the Galápagos Islands. Stanford University Press, Stanford, 863 p. (Ref. 28023)
وضعيت در فهرست قرمز IUCN (Ref. 130435)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Preferred temperature (Ref.
123201): 23.7 - 24.5, mean 23.9 °C (based on 9 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00579 - 0.02736), b=3.03 (2.84 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.45 se; based on food items.
جهندگی (Ref.
120179): متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
