Teleostei >
Carangaria/misc (Various families in series Carangaria) >
Polynemidae (Threadfins)
Etymology: Pentanemus: Greek, pente = five + Greek, nema = filament (Ref. 45335).
More on author: Linnaeus.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
海洋; 半咸淡水 居于水底的; 深度上下限 10 - 70 m (Ref. 10799). 热带; 21°N - 18°S, 27°W - 14°E (Ref. 57343)
Eastern Atlantic: Senegal to Angola (Ref. 57402). Also reported from Mauritania (Ref. 10799) and Cape Verde (Ref. 27000). Reported from Cuba based on a single specimen; no other specimens taken from the western Atlantic (Ref. 57343).
东大西洋: 塞内加尔到安哥拉。 记录来自以一件标本为依据的古巴了; 没有其他的标本取自了大西洋西部。
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm 15.0 range ? - 17 cm
Max length : 35.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 57402); common length : 25.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3659)
背棘 (总数) : 9; 背的软条 (总数) : 14 - 18; 臀棘: 3; 臀鳍软条: 28 - 30. Diagnosis: detached pectoral filaments very long, exceeding body length; base of anal fin much longer than base of 2nd dorsal fin; body moderately elongate and compressed, its height comprised 3.0-3.4 in standard length; snout very short, blunt and prominent; mouth inferior; maxillary bone strongly widened at its end, reaching largely past eye; 2 widely separated dorsal fins, 1st with 8 flexible spines, 2nd with 1 spine and 14-18 soft rays; anal fin base much longer than 2nd dorsal fin base; pectoral fin inserted very low on body; threadlike filaments, 5 in number, 4 of them longer than total length of fish; scales ctenoid; head scaly (Ref. 57402).
Coloration: body uniformly silvery, greyish on back, shading to whitish ventrally; fins tinged with yellow (Ref. 57402).
Body shape (shape guide): fusiform / normal.
Adults occur over sandy (Ref. 2683) and muddy bottoms in shallow waters (Ref. 57343), frequently in brackish waters (Ref. 57343, 57402) and estuaries (Ref. 57402). Carnivorous (Ref. 57402), They feed on fish and shrimps (Ref. 28587).
生活在沙的 (参考文献 2683)之上与泥底部在浅水区中, 时常在半咸淡的栖息地。 捕食鱼类与虾.(参考文献 28587)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
东大西洋: 塞内加尔到安哥拉。 记录来自以一件标本为依据的古巴了; 没有其他的标本取自了大西洋西部。
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
易受伤害 (VU) (A2bd); Date assessed: 15 July 2014
人类利用
渔业: 高经济性
工具
特别资料
下载 XML
网络资源
基于模型的估算
首选温度 (参考文献
123201): 20.2 - 27.9, mean 25.8 °C (based on 70 cells).
系统发育多样性指数 (参考文献
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00236 - 0.00672), b=3.13 (2.98 - 3.28), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (参考文献
69278): 3.6 ±0.57 se; based on food items.
回复力 (参考文献
120179): 高度, 族群倍增时间少于 15个月 (K=0.72).
渔业脆弱性 (Ref.
59153): Low to moderate vulnerability (31 of 100).
🛈
气候脆弱性 (Ref.
125649): High to very high vulnerability (75 of 100).
🛈
营养素 (Ref.
124155): Calcium = 194 [95, 369] mg/100g; Iron = 1.34 [0.67, 2.39] mg/100g; Protein = 19.5 [18.0, 21.1] %; Omega3 = 0.274 [0.169, 0.428] g/100g; Selenium = 64.3 [33.4, 126.3] μg/100g; VitaminA = 11.4 [5.1, 25.3] μg/100g; Zinc = 1.44 [1.00, 2.11] mg/100g (wet weight);
