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> Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Ctenochaetus: Greek, kteis, ktenos = comb + Greek, chaite = hair (Ref. 45335).
More on authors: Quoy & Gaimard.

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser riff-verbunden; tiefenbereich 0 - 60 m (Ref. 128797), usually 6 - 30 m (Ref. 58652). Tropical; 24°C - 28°C (Ref. 27115); 35°N - 34°S, 99°E - 77°W

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Indo-Pacific: throughout the region except the Hawaiian, Marquesas and Easter islands. Record from Baker Island (US Minor Islands) based on a photograph (Ref. 42056). Absent from Malden and Jarvis islands (Ref. 1602).

Length at first maturity / Size / Gewicht / Alter

Maturity: L_m ?, range 10 - ? cm
Max length : 26.0 cm TL Männchen/unbestimmt; (Ref. 2334); common length : 18.0 cm TL Männchen/unbestimmt; (Ref. 3146); max. veröff. Gewicht: 437.00 g (Ref. 125599); max. veröff. Alter: 36 Jahre (Ref. 52229)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 8; Rückenflossenweichstrahlen (insgesamt): 27-31; Afterflossenstacheln 3; Afterflossenweichstrahlen: 24 - 28. This species is distinguished by the following characters: body deep and compressed, its depth 1.9-2.3 times in standard length or SL; mouth small, teeth numerous (> 30 in jaws of adults), movable, slender and elongate, with expanded incurved tips which are denticulate on the lateral margin (6 denticulations on upper and 4 on lower teeth); total gill rakers on first gill arch 27-36; a continuous unnotched dorsal fin with VIII,27-31; AIII,24-28; caudal fin lunate, concavity 3.7-6 times in SL; a lancet-like spine on caudal peduncle which folds into a deep horizontal groove; colour dark olive to yellowish brown with blue or blue-grey lengthwise lines on body and small orange spots on head and nape; dorsal and anal fins with about 5 lengthwise dark bluish bands; pectoral fins pale with brownish yellow rays; a small blackish spot at rear base of dorsal fin of juveniles and small adults (Ref. 9808).

Inhabits reef flats and lagoon and seaward reefs to a depth of over 30 m. Occurs over coral (Ref. 58534), rock, pavement, or rubble substrates. May occur singly or in small to very large, often mixed-species aggregations (Ref. 48637). Feeds on surface film of blue-green algae and diatoms (making this species a key link in the ciguatera food chain) as well as on various small invertebrates.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

In Tahiti, spawning starts near full moon with the formation of schools of several thousand fish at various depths. The fish remain almost motionless for between 1 to 3 hrs, then change their normal color to pale grey. About 4 or 5 fishes rise a few yards above main school and swim around each other discharging milt and eggs, then return to former place and replaced by another group to spawn.

Hauptreferenz Upload your references | Referenzen | Koordinator : Randall, John E. | Partner

Randall, J.E and K.D. Clements, 2001. Second revision of the surgeonfish genus Ctenochaetus (Perciformes: Acanthuridae), with descriptions of two new species. Indo-Pac. Fish. (32):33 p. (Ref. 42056)

IUCN Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 07 May 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Reports of ciguatera poisoning (Ref. 9513)

Nutzung durch Menschen

Fischereien: kommerziell; Aquarium: Kommerziell

FAO - Publication: search | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 123201): 24.6 - 29, mean 27.8 °C (based on 1078 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02344 (0.01927 - 0.02851), b=2.97 (2.92 - 3.02), in cm total length, based on LWR estimates for this species (Ref. 93245).

Trophic level (Ref. 69278): 2.0 ±0.0 se; based on diet studies.

Generation time: 1.4 (1.1 - 2.7) years. Estimated as median ln(3)/K based on 14 growth studies.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (tmax = 36; K=0.87).

Prior r = 0.44, 95% CL = 0.29 - 0.66, Based on 1 stock assessment.

Fishing Vulnerability (Ref. 59153): Low vulnerability (16 of 100).

Preiskategorie (Ref. 80766): Medium.

Nutrients (Ref. 124155): Calcium = 35.1 [21.3, 58.3] mg/100g; Iron = 0.26 [0.14, 0.63] mg/100g; Protein = 18.2 [16.9, 19.4] %; Omega3 = 0.121 [0.078, 0.192] g/100g; Selenium = 22.9 [13.4, 41.9] μg/100g; VitaminA = 34.9 [8.0, 142.9] μg/100g; Zinc = 0.379 [0.285, 1.299] mg/100g (wet weight); based on nutrient studies.

Ctenochaetus striatus (Quoy & Gaimard, 1825)