分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes)
電鰻目 (Knifefishes) >
Sternopygidae (Glass knifefishes)
胸肛魚科 (Glass knifefishes)
Etymology: Sternopygus: Greek, sternon = sternon, + Greek, pyge = tail (Ref. 45335).
More on authors: Bloch & Schneider.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性; pH range: 6.0 - 6.5; dH range: 4 - 15. 熱帶; 22°C - 28°C (Ref. 2059)
South America: Magdalena River basin; entire extent of the Amazon and Orinoco River basins below approximately 500 m elevation including Napo River of western Ecuador and Madre de Dios River of Peru; all drainages of the Guianas Shield; Atlantic drainages of northeastern Brazil (Tocantins, Parnaíba, Pindaré, Itapicuru, and Salgado rivers); São Francisco River basin; Rio de Janeiro, Brazil; Paraguay-Paraná River basin.
南美洲: Magdalena 河流域; 在大約 500條厄瓜多西部的公尺海拔包括 Napo 河與祕魯的母親 de Dios 河之下的亞馬遜河的整個範圍與奧里諾科河河流域; 圭亞那的所有流域遮蔽; 巴西東北部 (Tocantins ， Parnaiba ， Pindare ， Itapicuru 與 Salgado 河) 的大西洋流域; Sao 弗朗西斯科河流域; 巴西里約熱內盧; 巴拉圭- 巴拉納河的流域。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 25.0, range 20 - 30 cm
Max length : 141 cm TL 雄魚/尚未辨別雌雄; (Ref. 39524)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
臀鰭軟條: 195 - 300.
Occurs in swamps, creeks, and river with lentic waters. Preys on small invertebrates, particularly the larvae of aquatic insects (Ref. 12225). Breeds before the start of the rainy season (Ref. 10645) or during the rainy season, with a fecundity count of 6473 eggs (Ref. 10643). Males persistently defend their territory and apparently make electric signals (by increased electric organ discharge (EOD) rates and interruptions thereof) to females passing by to draw in a spawning partner (Ref. 10605). Mature females' EODs are of higher frequencies than mature males (Ref. 10645). Plasma androgens modulate the EOD frequency during the breeding season (Ref. 10767). Embryos hatch on day 4; larvae begin to feed on day 11. The electric organ and electroreceptors are both present in the larva at the time of first exogenous feeding (Ref. 10605). Seems to reach sexual maturity at 1 year of age, based on breeding experiments (Ref. 10011).
用平靜的水域出現於沼澤，小溪與河。 捕食小型無脊椎動物, 特別地仔魚水生昆蟲.(參考文獻 12225) 繁殖在那之前雨季 (參考文獻 10645)的初始或者在雨季的時候, 具有一個 6473個卵的孕卵數.(參考文獻 10643) 雄性持續地防護他們的領土而且顯然地製造放電對經過變短一個產卵伴侶的雌性的信號 (藉著增加發電器放電 (EOD) 率與中斷關於) 。 (參考文獻 10605) 成熟的母魚的 EODs 超過成熟的雄性是較高的頻率。 (參考文獻 10645) 雄性荷爾蒙激素在繁殖季節的時候調整 EOD 頻率。 (參考文獻 10767) 胚胎在第四天上孵化; 仔魚開始覓食第11天。 發電器與電感受體是在第一次向外覓食的時候兩者都出現在幼體.(參考文獻 10605) 似乎在 1 歲達成性成熟, 以繁殖實驗為依據.(參考文獻 10011)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Eggs of 3 mm diameter are deposited among plants. Larvae hatch after 4 days and start feeding after 11 days.南美洲: Magdalena 河流域; 在大約 500條厄瓜多西部的公尺海拔包括 Napo 河與祕魯的母親 de Dios 河之下的亞馬遜河的整個範圍與奧里諾科河河流域; 圭亞那的所有流域遮蔽; 巴西東北部 (Tocantins ， Parnaiba ， Pindare ， Itapicuru 與 Salgado 河) 的大西洋流域; Sao 弗朗西斯科河流域; 巴西里約熱內盧; 巴拉圭- 巴拉納河的流域。
Ortega, H. and R.P. Vari, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref. 6329)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 03 December 2020
人類使用
漁業: 商業性; 水族館: 商業性
工具
特別的報告
下載 XML
網路資源
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=0.00302 (0.00193 - 0.00471), b=2.82 (2.69 - 2.95), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.40 se; based on food items.
Fishing Vulnerability (Ref.
59153): Very high vulnerability (84 of 100).
