Environment: milieu / climate zone / depth range / distribution range
生态学
海洋; 淡水; 半咸淡水 居于水底的; 深度上下限 5 - 70 m (Ref. 114953). 熱帶; 30°N - 37°S, 20°E - 155°E (Ref. 114953)
Indo-West Pacific: Persian Gulf (Ref. 68964), Red Sea and east to South Africa, western India Sri Lanka, Laos to Papua New Guinea, south to New South Wales, western to eastern Australia (Ref. 114953).
印度-西太平洋: 紅海而且東非到巴布亞新幾內亞, 北至中國南部, 南至澳洲新南威爾斯。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm ?, range 430 - ? cm
Max length : 730 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5578); common length : 550 cm TL 雄鱼/尚未辨别雌雄; (Ref. 11228)
Dark grey to blackish brown above, white to yellowish below (Ref. 11228).
深灰色的对暗褐色的上方, 腹面白色到淡黄色的.(参考文献 11228)
Demersal on both insular and continental shelves, but now thought to be extinct through much if its original range (Ref. 114953). Inshore and intertidal species known to enter freshwater in some areas (Ref. 9859). Found in shallow bays, estuaries, and lagoons (Ref. 11228). Often on the bottom with its saw elevated at an angle to the body axis (Ref. 9859). Feeds on fishes and shellfishes (Ref. 58784). Ovoviviparous (Ref. 50449). Reaches maturity after 9 years. Females have litters of approximately 12 pups. Maturity size unclear, possibly near 430 cm TL; born at approximately 80 cm TL (Ref. 114953). Flesh considered tasty (Ref. 11228).
知道的沿海地区与潮间带的种在一些地区进入淡水.(参考文献 9859) 发现于浅湾，河口与泻湖了。 (参考文献 11228) 时常在底部上用它的锯子升高的以一个角到体轴.(参考文献 9859) 卵胎生的.(参考文献 50449) 肉被认为是好吃的.(参考文献 11228)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Ovoviviparous, embryos feed solely on yolk (Ref. 50449).印度-西太平洋: 紅海而且東非到巴布亞新幾內亞, 北至中國南部, 南至澳洲新南威爾斯。
Compagno, L.J.V. and P.R. Last, 1999. Pristidae. Sawfishes. p. 1410-1417. In K.E. Carpenter and V. Niem (eds.) FAO identification guide for fishery purposes. The Living Marine Resources of the Western Central Pacific. FAO, Rome. (Ref. 9859)
人类利用
渔业: 商业性; 游钓鱼种: 是的
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特别资料
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Estimates based on models
Preferred temperature (Ref.
123201): 24.6 - 29.3, mean 28.5 °C (based on 2833 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5234 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00198 - 0.01270), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 12.4 [3.1, 55.8] mg/100g; Iron = 0.505 [0.120, 1.454] mg/100g; Protein = 19.3 [17.2, 21.4] %; Omega3 = 0.11 [0.04, 0.28] g/100g; Selenium = 81.8 [22.3, 265.0] μg/100g; VitaminA = 3.88 [1.41, 10.36] μg/100g; Zinc = 0.61 [0.29, 1.12] mg/100g (wet weight);
