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Istiophoridae (Billfishes)
Etymology: Tetrapturus: Greek, tetra = four + Greek, pteron, fin, wing (Ref. 45335). More on author: Tanaka.
محيط زيست / آب و هوا _ اقليم / Range
بوم شناسي
; دريايي; اقیانوس رو (Ref. 51243); تغييرات عمق 0 - 1830 m (Ref. 86942), usually 0 - 350 m (Ref. 89423). Subtropical, preferred 28°C (Ref. 107945); 43°N - 56°S, 20°E - 68°W
Indian and Pacific: tropical and temperate waters. Although some stray individuals are found in the Atlantic Ocean, this species is believed to have its spawning grounds and principal populations only in the Pacific and Indian Oceans. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 230 cm TL جنس نر / بدون خواص جنسي; (Ref. 9308); common length : 190 cm TL جنس نر / بدون خواص جنسي; (Ref. 9308); بيشينه وزن گزارش شده: 52.0 kg (Ref. 43)
خارهاي باله پشتي (کل): 0; شعاع نرم باله پشتي (کل): 51-57; خارهاي باله مخرجي 0; شعاع نرم باله مخرجي: 18 - 23. Dark blue above, blue splattered with brown on the sides, silvery white below; 1st dorsal fin plain dark blue, other fins brown or dark brown; anal fin bases with tinges of silvery white.
Oceanic and epipelagic, found above the thermocline (Ref. 9308). Feeds on fishes, cephalopods and crustaceans. Also caught as a by-catch of long lines with hooks intended for tuna. Marketed frozen and prepared as fish cakes and sashimi in Japan (Ref. 9308). Also prepared as sausages.
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Spawning is believed to occur mainly during the winter months, especially in warm offshore currents with surface temperature of about 25°C.
Nakamura, I., 1985. FAO species catalogue. Vol. 5. Billfishes of the world. An annotated and illustrated catalogue of marlins, sailfishes, spearfishes and swordfishes known to date. FAO Fish. Synop. 125(5):65p. Rome: FAO. (Ref. 43)
وضعيت در فهرست قرمز IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: ارزش تحاري اندك; ماهي ها ي سرگرم كننده: بله
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