Teleostei >
Anguilliformes (Eels and morays)
鰻目 (Eels and morays) >
Anguillidae (Freshwater eels)
鰻鱺科(Freshwater eels) (Freshwater eels)
Etymology: Anguilla: Latin, anguilla, .-ae = eel (Ref. 45335).
More on author: Peters.
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). 熱帶; 25°N - 35°S
Western Indian Ocean: east coast rivers of Africa from Kenya south to Cape Agulhas, also in Madagascar and other western Indian Ocean islands (Ref. 7248, 52193). Reported from New Caledonia (Ref. 11889).
西印度洋: 來自肯亞的非洲的東海岸河南至艾古哈斯角, 也馬達加斯加與其他的西印度洋島。 移動相當深入內陸。 記錄來自新加勒多尼亞了。 (參考文獻 11889)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 150 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3506); 120.0 cm SL (female); 最大体重: 5.7 kg (Ref. 52193); 最大体重: 5.7 kg; 最大年龄: 20 年 (Ref. 48660)
背棘 (总数) : 0; 臀棘: 0.
背部橄榄色到黑灰色, 腹部颜色较淡.(参考文献 3971) 尾鳍与背鳍与臀鳍汇合。
Migratory species, which breeds in the ocean (Ref. 52331). Inhabits both quiet and fast flowing water (Ref. 13337). Elvers ascend rivers mainly at night and overcome waterfalls and walls of dams with great determination. Adults usually sedentary. Females can attain 120 cm SL and are generally longer and heavier than males (Ref. 48660). Carnivorous, eats dead or living prey but especially fish and crabs. After feeding in fresh water for ten years or more, adults assume a silver breeding dress, the eyes become enlarged and they return to sea to breed. Considered to breed east of Madagascar, but thought to move south of that island on its way to the Mozambique coast and South African rivers (Ref. 13337). Flesh fatty but highly esteemed as smoked or jellied eel (Ref. 5214). Caught with various types of nets (Ref. 4967).
回游种, 在海洋中繁殖.(参考文献 52331) 栖息于安静与快速的流动水。 (参考文献 13337) 鳗苗主要地在晚上上溯到河而且用大的决心克服瀑布与水坝的墙壁。 成鱼通常定栖的。 雌性能达到 120 公分 SL 而且通常比雄性更长与重。 (参考文献 48660) 肉食性, 吃死或活的猎物但是尤其鱼与螃蟹。 在觅食于淡水十年或十年以上之后, 成鱼呈现一件银色的繁殖服装,眼变成增大，而且他们返回大海繁殖。 被认为是繁殖马达加斯加东方, 但是认为移动那一个岛南方在它的方法到莫桑比克海岸与南非河.(參考文獻 13337) 肉脂肪的但是深受喜愛的當煙燻或凝成膠狀的鰻魚.(參考文獻 5214) 用各種不同類型的網捕獲了。 (參考文獻 4967)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
西印度洋: 來自肯亞的非洲的東海岸河南至艾古哈斯角, 也馬達加斯加與其他的西印度洋島。 移動相當深入內陸。 記錄來自新加勒多尼亞了。 (參考文獻 11889)
Castle, P.H.J., 1984. Anguillidae. p. 34-37. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3506)
世界自然保护联盟红皮书 (Ref. 130435)
临近濒危 (NT) (A2bcde); Date assessed: 08 November 2018
人类利用
渔业: 商业性; 养殖: 商业性; 游钓鱼种: 是的
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Estimates based on models
Preferred temperature (Ref.
123201): 19.6 - 27.5, mean 26.4 °C (based on 98 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00089 (0.00051 - 0.00156), b=3.20 (3.05 - 3.35), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.55 se; based on food items.
Generation time: 26.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回复力 (Ref.
120179): 非常低的, 最小族群倍增时间超过14 年 (K=0.04).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (81 of 100).
