分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Carangaria/misc (Various families in series Carangaria) >
Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋; 淡水; 半咸淡水 居于水底的; 降海洄游 (Ref. 51243); 深度上下限 0 - 6 m (Ref. 57343). 热带; 5°S - 28°S, 121°E - 154°E (Ref. 57343)
Indo-West Pacific: southern New Guinea and northern Australia.
印度-西太平洋: 新几内亚南部与澳洲北部。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 170 cm FL 雄鱼/尚未辨别雌雄; (Ref. 6390); common length : 48.0 cm FL 雄鱼/尚未辨别雌雄; (Ref. 9685); 最大体重: 45.0 kg (Ref. 9685); 最大年龄: 20 年 (Ref. 6390)
简单描述
检索表 | 型态特徵 | 形态测量图
Body without spots nor stripes. Pectoral fin rays unbranched; 4th pectoral filament long, 40-53% of SL. Second spine of dorsal fin more robust than the rest. Posterior margin of maxilla extending considerably beyond level of posterior margin of adipose eyelid. Lower tip of 7th proximal pterygiophore of 1st dorsal fin directed backward. Lateral squamation on caudal fin unbranched (Ref. 40970).
身体没有斑点也不斑纹。 胸鳍鳍条不分枝的; 第 4个胸鳍丝状突起长又 40-53% 的 SL。 背鳍的第二根棘比其他部分更结实。 非常地延伸超过脂眼睑的后缘的水平的颚骨的后缘。 第一背鳍的第 7 近端支鳍骨的较低的顶端朝向后面。 在尾鳍上的侧面的鳞片排列不分枝的.(参考文献 40970)
Found in shallow, turbid waters coastal waters, estuaries, mangrove creeks, and mangrove-lined rivers (Ref. 57343), over sandbanks and mud substrates (Ref. 6390). Usually forms loose schools, although larger fish are more often observed in pairs or singly (Ref. 6390). Feeds on prawns and fish. Protandrous hermaphrodites.
发现于水浅又混浊的水域沿岸水域，河口，红树林小溪与红树林林列的河 (参考文献 57343)了, 在沙洲与泥底部之上。 (参考文献 6390) 通常形成松散的鱼群, 虽然较大的鱼更时常被成对或各别地观察。 (参考文献 6390) 吃虾与鱼。 雄性先熟的雌雄同体。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
King threadfin between 70 cm and 100 cm FL may be transitional hermaphrodites (they possess mature male and immature female reproductive tissue, and function as males (Ref. 28736)). However, most king threadfin less than 80 cm FL are males and most more than 95 cm FL are females (Ref. 28737). Transitional king threadfin are most often found in the months of June, July, August and September (Ref. 6390).
There is little information on the larvae, although nursery areas are known to be inshore, shallow and of low salinity (Ref. 6390).印度-西太平洋: 新几内亚南部与澳洲北部。
Motomura, H., 2004. Threadfins of the world (Family Polynemidae). An annotated and illustrated catalogue of polynemid species known to date. FAO Spec. Cat. Fish. Purp. Rome: FAO. 3:117 p. (Ref. 57343)
人类利用
渔业: 商业性; 游钓鱼种: 是的
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Estimates based on models
Preferred temperature (Ref.
123201): 24.8 - 28.9, mean 28 °C (based on 575 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00311 - 0.01469), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.0 ±0.4 se; based on diet studies.
Generation time: 7.3 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (tmax=20).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (66 of 100).
