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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
Ecologia
marinhas associadas(os) a recifes; intervalo de profundidade 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
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).
Comprimento de primeira maturação / Tamanho / Peso / Idade
Maturity: Lm ?, range 10 - ? cm
Max length : 26.0 cm TL macho/indeterminado; (Ref. 2334); common length : 18.0 cm TL macho/indeterminado; (Ref. 3146); peso máx. publicado: 437.00 g (Ref. 125599); idade máx. registrada: 36 anos (Ref. 52229)
Espinhos dorsais (total) : 8; Raios dorsais (total) : 27 - 31; Espinhos anais: 3; Raios anais : 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.
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
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.
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)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Reports of ciguatera poisoning (Ref. 9513)
Uso pelos humanos
Pescarias: espécies comerciais; Aquário: Espécies comerciais
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Preferred temperature (Ref.
123201): 24.6 - 29, mean 27.8 °C (based on 1078 cells).
Índice de diversidade filogenética (Ref.
82804): PD
50 = 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).
Nível Trófico (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.
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tmax = 36; K=0.87).
Prior r = 0.44, 95% CL = 0.29 - 0.66, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref.
59153): Low vulnerability (18 of 100).
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.
