分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Rhinopristiformes (Shovelnose rays) >
Pristidae (Sawfishes)
鋸鰩科 (Sawfishes)
Etymology: Pristis: Greek, pristis = saw (Ref. 45335).
More on author: Garman.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋; 半鹹淡水 居於水底的; 深度上下限 1 - 20 m (Ref. 116378). 熱帶; 20°N - 25°S, 46°E - 155°E (Ref. 114953)
Indo-West Pacific: tropical Australia, possibly more widely distributed. A nominal record from the Canary Islands may not be this species, but the sketchily known Pristis pristis from the eastern Atlantic is similar and needs comparison to determine if the two species are distinct (Ref. 009859). India (Bay of Bengal), Indonesia to eastern Australia, isolatted record from Réunion (Ref. 114953).
印度-西太平洋: 熱帶澳洲,可能地更廣泛分佈了。 加納利群島可能不是這種，但是來自東大西洋的大略已知的 鋸鰩〔Pristis pristis〕 是相似的而且需要比較以決定是否的一個分類命名紀錄從兩者種是明顯的。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 318 cm TL 雄魚/尚未辨別雌雄; (Ref. 116378); 最大年齡: 34 年 (Ref. 116378)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Greenish brown, rarely yellowish; white ventrally; fins paler. Body shark-like, pectoral fins distinct; head flattened, with a blade-like snout bearing 18-22 pairs of lateral teeth; blade broad, not tapering distally. Nostrils broad with large nasal flaps. Rostral teeth slender, with a groove along posterior margins; teeth reaching basal quarter of blade. Skin with denticles.
綠褐色的, 非淡黃色的; 腹側白色的; 鰭灰白。 身體像鯊魚一樣的, 胸鰭明顯的; 平的頭部, 具有一個生長著 18-22個對側齒的刀劍狀的吻; 葉片寬的, 末梢不尖的。 鼻孔寬的有大鼻蓋。 嘴的齒細長的, 具有一個凹槽沿著後緣; 齒達到葉片的基部。 皮膚有細齒。
Demersal in shallow coastal inshore habitats in mangrove swamps and embayments (Ref. 114953), intertidal species found in estuaries and on tidal mudflats (Ref. 9859). Ascends brackish areas of rivers (Ref. 9859). Ovoviviparous (Ref. 50449). Pupping thought to occur during the tropical wet season (November to March in Australia (Ref. 114953). Biology little known (Ref. 9859). Males mature at approximately 260 cm TL, females possibly slightly larger; born at 65 cm TL (Ref. 114953). Flesh may be good to eat (Ref. 6871).
沿海地區與潮間帶的種發現於河口了與在潮汐的泥灘上.(參考文獻 9859) 上溯到河的半鹹淡區域。 (參考文獻 9859) 卵胎生的.(參考文獻 50449) 生物學特性知道的很少.(參考文獻 9859) 肉可能是好吃.(參考文獻 6871)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Ovoviviparous, embryos feed solely on yolk (Ref. 50449).印度-西太平洋: 熱帶澳洲,可能地更廣泛分佈了。 加納利群島可能不是這種，但是來自東大西洋的大略已知的 鋸鰩〔Pristis pristis〕 是相似的而且需要比較以決定是否的一個分類命名紀錄從兩者種是明顯的。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
極危 (CR) (A2cd); Date assessed: 11 March 2022
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5234 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00195 - 0.01230), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
