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Acanthuriformes (Surgeonfishes) >
Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335); caesius: Naso caesius is in reference to its most common ground color which is bluish grey..
More on authors: Randall & Bell.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser riff-verbunden; tiefenbereich 15 - 50 m (Ref. 90102). Tropical
Pacific Ocean: Northern Marianas, Marshall Islands, Hawaiian Islands, Pitcairn group, Society Islands (French Polynesia), Australia and New Caledonia.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 45.6 cm SL Männchen/unbestimmt; (Ref. 9944)
Rückenflossenstacheln (insgesamt) : 6 - 7; Rückenflossenweichstrahlen (insgesamt) : 27 - 30; Afterflossenstacheln: 2; Afterflossenweichstrahlen: 28 - 31. Bluish grey to grey-brown, capable of displaying a colour pattern of vertically elongate blotches (lighter or darker than ground colour) on side and upper part of body. Opercular and preopercular margins not dark brown. Caudal fin uniform in colour. Gill rakers on lower limb of gill arches entirely pale. Edge of lower lip not white (Ref 9808).
Benthopelagic over coral and rock (Ref. 58302). Occurs singly or in aggregations along clear seaward and outer lagoon reefs and channels (Ref. 37816). Feeds in midwater on zooplankton (Ref. 90102).
Life cycle and mating behavior
Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven
Randall, J.E. and L.J. Bell, 1992. Naso caesius, a new acanthurid fish from the Central Pacific. Pac. Sci. 46(3):344-352. (Ref. 9944)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: kommerziell
Tools
Zusatzinformationen
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Estimates based on models
Preferred temperature (Ref.
123201): 24.7 - 28.8, mean 26.5 °C (based on 82 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.3 ±0.1 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).
Nutrients (Ref.
124155): Calcium = 40.2 [24.4, 76.9] mg/100g; Iron = 0.566 [0.291, 0.972] mg/100g; Protein = 18.6 [17.4, 19.7] %; Omega3 = 0.123 [0.078, 0.227] g/100g; Selenium = 35.6 [18.7, 63.5] μg/100g; VitaminA = 56.6 [17.3, 183.1] μg/100g; Zinc = 1.54 [1.05, 2.21] mg/100g (wet weight);
