Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
นิเวศวิทยา
เกี่ยวกับทะเล,น้ำเค็ม เกี่ยวกับหินโสโครก; ระดับความลึก 0 - 122 m (Ref. 58302), usually 4 - 46 m (Ref. 27115). Tropical; 24°C - 28°C (Ref. 27115); 29°N - 36°S, 26°E - 137°W (Ref. 57250)
Indo-Pacific: Red Sea and East Africa to the Hawaiian, Marquesas and Ducie islands, north to southern Japan, south to Lord Howe Island (Ref. 1602); exxcluding Oman and Persian Gulf (Ref. 86689). Eastern Central Pacific: Galápagos Islands.
ขนาด / น้ำหนัก / Age
Maturity: Lm ? range ? - ? cm
Max length : 60.0 cm TL เพศผู้/กระเทย; (Ref. 9808)
เงี่ยงครีบหลัง (รวม) : 6; ก้านครีบอ่อนที่หาง (รวม) : 27 - 29; เงี่ยงครีบก้น: 2; ก้านครีบอ่อนที่ก้น: 27 - 30. This species is distinguished by the following characters: body moderately deep and compressed, its depth 2.6 to 3 times in standard length (SL) (reported greatest depth of body in subadults at 2.3 in SL, Ref. 90102); dorsal profile of body uniformly convex; adults with a median, broad-based, tapering, horn-like projection extending directly anteriorly from snout at level of lower part of eye to more than 1/2 head length in front of mouth (first developing as a bump on forehead of young of about 10 cm SL; dorsal profile of snout from upper lip to base of horn very short, curved, and nearly vertical; mouth small; teeth small, spatulate, with denticulate edges, about 50 in each jaw; a continuous unnotched D VI,27-29; A II,27-30; pectoral-fin rays 15-17; pelvic fins I,3; caudal fin slightly rounded, without a filament from each corner; 2 bony plates on each side of caudal peduncle, developing moderate keels with age; colour of body olivaceous grey-brown to light grey, usually with vertical dark brown lines on body which break into small spots dorsally and ventrally; some individuals only with small dark spots; head with small dark brown spots or short irregular lines which become long and oblique on horn (dark markings on one pale phase may be faint or absent; in another phase the anterior third of the body may be distinctly paler than the rest); caudal fin whitish with a large diffuse dark blotch centrobasally in fin (Ref. 9808).
Inhabit mid-waters along steep outer lagoon and seaward reef drop-offs. Also found along rocky shores (Ref. 30573, 48637). Benthopelagic (Ref. 58302). Usually in small groups but form large schools in oceanic locations or on reefs subject to strong currents (Ref. 48637). Juveniles and subadults feed on benthic algae; adults feed on zooplankton. Pair spawning has been observed. Caught with nets (Ref. 30573). Minimum depth reported taken from Ref. 128797.
Life cycle and mating behavior
Maturities | การสืบพันธุ์ | Spawnings | Egg(s) | Fecundities | ตัวอ่อน
Probably spawn in pairs (Ref. 240).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Threat to humans
Reports of ciguatera poisoning (Ref. 30298)
Human uses
การประมง: การค้า; สถานที่แสดงสัตว์และพืชน้ำ: การค้า
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แหล่งที่มาจากอินเตอร์เน็ต
Estimates based on models
Preferred temperature (Ref.
115969): 24.3 - 29, mean 27.8 (based on 1558 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01950 (0.01248 - 0.03047), b=3.02 (2.89 - 3.15), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
ระดับชั้นอาหาร (Ref.
69278): 2.2 ±0.15 se; based on food items.
ความสามารถในการกลับคืนสู่ปกติ (Ref.
120179): ขนาดกลาง, เวลาต่ำสุดที่จะทำให้ประชากรเพิ่มขึ้นเป็น 2 เท่าใช้เวลา 1.4 - 4.4 ปี (K=0.402; Tmax=25).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).
