分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Auchenipteridae (Driftwood catfishes)
頸鰭鯰科 (Driftwood catfishes) > Auchenipterinae
Etymology: Ageneiosus: Greek, a = without + greek, geneias, -ados = bear, chin (Ref. 45335).
More on author: Linnaeus.
Issue
Redescribed in Walsh (pers comm., and 1990) as Ageneiosus brevifilis Valenciennes.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; pH range: 6.5 - 7.8; dH range: ? - 20. 熱帶; 22°C - 24°C (Ref. 2060)
South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Suriname, and Venezuela (Ref. 37098). Reported from Uruguay (Ref. 54736).
南美洲。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 64.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 111518); 最大體重: 3.1 kg (Ref. 111518)
臀鰭軟條: 34 - 40; 脊椎骨: 46 - 51. Body naked and elongated. Head is pointed and depressed at the top. Mouth is big and wide. The lateral eyes are situated along the level of the mouth, ensuring a vision above and below. Exhibits sexual dimorphism, like A. dentatus. The first ray of the dorsal fin is very long and has pointed spines (Ref. 35381).
身體裸露與瘦長的。 頭部是尖的而且在頂端扁平的。 嘴是大與寬的。 側面的眼睛被位於沿著嘴巴的水平, 確定一個視野上面與下面。 顯示性的同種二形, 例如 A. dentatus. 背鰭的第一個鰭條非常長而且有尖的棘。 (參考文獻 35381)
Prefers rivers in overgrown backwaters where the current is not too strong. Reported to be nocturnal. Feeds on fish and crustaceans. The flesh is esteemed for its very fine flavor. Frequently captured with nets, with males difficult to release from the nets because of its strong dorsal spine that is bordered with denticles (Ref. 27188). During reproduction, the mandibular barbels and dorsal spine of the male change, and a copulatory organ appears at the anterior level of the anal fin. Fertilization is internal, the female being capable of keeping the spermatozoids inserted in the epithelium of her genital tract (Ref. 35381).
偏愛水流不是太強的河中植物茂盛的洄水區。 吃魚與甲殼動物。 它的肉為它的非常細滋味被讚賞。 被報告是夜行的。 時常用網捕獲了, 雄性難以從網中放出由於有細齒邊緣的它的強背棘。 (參考文獻 27188) 在繁殖, 顎的觸鬚與雄魚的背棘的時候改變，而且一個交配的器官在臀鰭的前面出現。 體內受精, 母魚能保持在她的生殖道的上皮被插入的精蟲.(參考文獻 35381)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Female lays eggs on plants a few days after fertilization (Ref. 2060). The females can preserve keep fertile spermatozoids by coating these with secretions of maternal origin and inserting these in the epithelium of its genital tract (Ref. 27188).南美洲。
Ferraris, C.J. Jr., 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37098)
人類使用
漁業: 商業性; 游釣魚種: 是的; 水族館: 公眾的水族館
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00666 - 0.01038), b=3.08 (3.02 - 3.14), in cm total length, based on LWR estimates for this species (Ref.
93245).
營養階層 (Ref.
69278): 4.0 ±0.66 se; based on food items.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Assuming tm=2-4, Fec>1000).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (46 of 100).
Nutrients (Ref.
124155): Calcium = 109 [55, 259] mg/100g; Iron = 1.47 [0.80, 2.90] mg/100g; Protein = 17.7 [15.4, 19.8] %; Omega3 = 0.247 [0.100, 0.606] g/100g; Selenium = 36.8 [13.5, 100.3] μg/100g; VitaminA = 31.7 [10.5, 99.2] μg/100g; Zinc = 1.42 [0.91, 2.14] mg/100g (wet weight); based on
nutrient studies.
