Issue
The 3 subspecies were upraised at species rank, as provisionally accepted names, , until more works are conducted on T. acus susbepcies to fix their status.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển Cùng sống ở rạn san hô; Mức độ sâu 0 - ? m. Subtropical; 43°N - , 98°W - 36°E
Western Atlantic: Massachusetts, USA to Brazil. Eastern Atlantic: off Morocco and the Mediterranean (Ref. 5505).
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm 47.3, range 45 - 50 cm
Max length : 153 cm TL con đực/không giới tính; (Ref. 26340); common length : 90.0 cm SL con đực/không giới tính; (Ref. 3129); Khối lượng cực đại được công bố: 3.7 kg (Ref. 4699)
Các tia vây lưng cứng (tổng cộng) : 0; Các vây lưng mềm (tổng cộng) : 20 - 27; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 20 - 24; Động vật có xương sống: 90 - 95. Diagnosis: body elongate; upper and lower jaws extremely long, forming a stout beak armed with very sharp teeth; gill rakers absent (Ref. 57228, 90102). Nostrils in depression before eyes (nasal pit); pelvic fins abdominal; 20-26 dorsal-fin rays; anal fin short, 9.7-11.7 times in body length; small, black lateral keel on either sides of caudal peduncle; caudal fin deeply forked (Ref. 57228).
Inhabits oceanic and neritic waters (Ref. 26340). Feeds on small fishes. Oviparous (Ref. 205). Eggs may be found attached to objects in the water by tendrils on the egg's surface (Ref. 205). Although sold fresh and salted, its market is limited due to the green-colored flesh (Ref. 5217). Circumglobal in tropical seas and divisible into four subspecies (Ref 90102).
Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)
IUCN Red List Status (Ref. 130435)
Threat to humans
Traumatogenic (Ref. 26235)
Human uses
Các nghề cá: Tính thương mại; cá để chơi: đúng
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Estimates based on models
Preferred temperature (Ref.
123201): 20 - 28.5, mean 26.5 °C (based on 1282 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00093 (0.00049 - 0.00176), b=3.11 (2.95 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 4.5 ±0.6 se; based on diet studies.
Generation time: 2.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Thích nghi nhanh (Ref.
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
Nutrients (Ref.
124155): Calcium = 33 [8, 135] mg/100g; Iron = 0.498 [0.212, 1.475] mg/100g; Protein = 17.2 [14.4, 20.3] %; Omega3 = 0.16 [0.06, 0.47] g/100g; Selenium = 16.9 [6.9, 46.1] μg/100g; VitaminA = 102 [14, 608] μg/100g; Zinc = 0.447 [0.259, 0.773] mg/100g (wet weight);
