分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Siluridae (Sheatfishes)
Etymology: Wallago: wallago;Bleeker, in 1851, took the Indian fish name, gave it generic range and used it connection with a new species. The name is "walaga" in Telugu / Tamil (Ref. 45335).
More on authors: Bloch & Schneider.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水; 半咸淡水 居于水底的; 河川洄游 (Ref. 37770). 熱帶; 22°C - 25°C (Ref. 2060); 38°N - 10°S
Asia: Pakistan to Viet Nam and Indonesia. Reported from Afghanistan (Ref. 39701). Lower risk - near threatened status in Western Ghats, India (Ref. 44149).
亞洲: 巴基斯坦到越南與印尼。 記錄來自阿富汗了。 (參考文獻 39701) 風險下游 - 靠近在印度高止西部威脅狀態.(參考文獻 44149)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 240 cm TL 雄鱼/尚未辨别雌雄; (Ref. 6028); common length : 75.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 6028)
背的软条 (总数): 5; 臀鳍软条: 77 - 97. Head broad, snout depressed. Body elongate, strongly compressed. Mouth very deeply cleft, its corner reaching far behind eyes. Teeth in jaws set in wide bands; vomerine teeth in two small patches. Barbels two pairs; maxillary barbels extending to anterior margin posterior of anal fin, mandibulary barbels to angle of mouth. Eyes small, with a free orbital margin. Dorsal fin small, anal fin very long (Ref. 4792). Mandibular barbel longer than pelvic fin; 24-30 gill rakers on the first arch (Ref. 12693). Eye in front of vertical through corner of mouth (Ref. 43281).
头部宽的, 吻扁平的。 细长的身体, 非常扁长形的。 嘴非常深深劈开的, 它的达到的角落在眼后方远处。 在宽的条纹中的颌部牙齿组; 在二个小的区块中的犁骨齿。 触须二对; 延伸至前缘的上颌骨触须臀鳍，嘴的角的下颚触须后面。 眼小的, 具有一个自由眼窝的边缘。 背鳍小的, 臀鳍非常长的.(参考文献 4792) 颚骨触须长度超过腹鳍; 在第一个弓上的 24-30个鳃耙.(参考文献 12693) 眼在垂直的之前经过嘴角.(参考文献 43281)
Found in large rivers, lakes and tanks. A large, voracious and predatory catfish which thrives in heels with grassy margin (Ref. 6028); mostly hides under holes in river banks and canals (Ref. 44149). Associated with deep, still or slow-flowing water with a mud or silt substrate (Ref. 6028). Sluggish and stays on muddy or silty bottom in search of food. Juveniles feed mainly on insects; adults feed on smaller fish, crustaceans, and mollusks. Oviparous, distinct pairing possibly like other members of the same family (Ref. 205). Abundant during the warm season; a pre-monsoon summer breeder. In the Mekong, it is reported to migrate to smaller streams, canals and to the floodplain during the flood season (Ref. 37770). When the water level in the Mekong drops and the flood recedes, it moves to the Mekong or larger tributaries, where it stays in deep pools until the next inundation period (Ref. 37770). Destructive to other more valuable food-fishes. Bites strongly if handled, with its huge mouth, formidable jaws, and band of conical teeth. Threatened due to over harvesting (Ref. 58490).
发现于大河，湖与水族箱了。 在具有长满草的边缘的底部中繁荣的一个大的，狼吞虎咽的与掠食性的鲶鱼;(参考文献 6028) 大部份在河岸与运河中藏在洞下。 (参考文献 44149) 深地伴随着了, 静止或流动很慢水具有一个泥或淤泥底部。 (参考文献 6028) 缓动性的与在泥泞或淤泥的底部以找寻食物上的停留。 稚鱼主要捕食昆虫; 成鱼吃较小的鱼，甲壳动物与软件动物。 丰富的在温暖的季节期间; 一个前季风夏天养育者。 在湄公河中，它被报告在洪水季节的时候回游到较小的溪流，运河与到洪泛区。 (参考文献 37770) 当湄公河下降与洪水的水位后退的时候，它移动到湄公河或者较大的支流, 在哪里它停留在深水池中直到下一个淹水时期.(参考文献 37770) 对其他的比较有价值的食用鱼的破坏力。 强烈地咬如果触摸, 用它的极大嘴，强大的颚与锥形齿箍。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
亞洲: 巴基斯坦到越南與印尼。 記錄來自阿富汗了。 (參考文獻 39701) 風險下游 - 靠近在印度高止西部威脅狀態.(參考文獻 44149)
Talwar, P.K. and A.G. Jhingran, 1991. Inland fishes of India and adjacent countries. Volume 2. A.A. Balkema, Rotterdam, i-xxii + 543-1158, 1 pl. (Ref. 4833)
人类利用
渔业: 商业性; 游钓鱼种: 是的
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00464 - 0.00681), b=2.99 (2.93 - 3.05), in cm total length, based on LWR estimates for this species (Ref.
93245).
营养阶层 (Ref.
69278): 3.7 ±0.56 se; based on food items.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Fec = 66,070; K=0.6;).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 84.8 [34.8, 224.1] mg/100g; Iron = 0.673 [0.340, 1.430] mg/100g; Protein = 15.6 [14.0, 17.6] %; Omega3 = 0.115 [0.054, 0.254] g/100g; Selenium = 78.4 [37.7, 185.3] μg/100g; VitaminA = 4.96 [1.12, 20.49] μg/100g; Zinc = 0.373 [0.244, 0.720] mg/100g (wet weight); based on
nutrient studies.
