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) >
Apteronotidae (Ghost knifefishes)
無背魚科 (Ghost knifefishes) > Apteronotinae
Etymology: Apteronotus: Greek, apteros = without wings / (in this cases, fins) + Greek, noton = back (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶; 24°C - 28°C (Ref. 2059)
South America: the Guianas, Brazil and Peru; rivers of Colombia and Venezuela, including the Catatumbo River.
南美洲: 圭亞那巴西與祕魯; 哥倫比亞與委內瑞拉的河, 包括 Catatumbo 河。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 13.0, range 13 - ? cm
Max length : 26.9 cm TL 雄魚/尚未辨別雌雄; (Ref. 36886)
Dorsal fin reduced to a dorsal filament;
背鰭縮小成一個背部的絲狀突起了;
Prefers fast flowing rivers (Ref. 26543). Forms loosely associated groups in rocky habitats or river banks (Ref. 10605). Nocturnal (Ref. 26543). Each individual fish possesses a unique spatiotemporal pattern of electric organ discharge (EOD) potentials distributed over the body surface (Ref. 10595). Chirps and EOD frequency modulations are important elements of courtship behavior and are sensitive to testosterone levels (Ref. 10011, 10883). Seems to reach sexual maturity at 1 year of age, based on breeding experiments (Ref. 10011). Tuberous electro receptors are differentiated and functional in larvae at day 9; electric organ and electro receptors both present in the larvae at the time of first exogenous feeding (Ref. 10605).
偏愛快速地流動河。 (參考文獻 26543) 形成鬆散的在岩石的棲息地或河岸聯合群。 (參考文獻 10605) 夜行的.(參考文獻 26543) 每個個別的魚持有被佈滿身體表面的一個發電器放電 EOD 電位的獨特時空上圖案。 (參考文獻 10595) 喳喳聲與 EOD 調頻是求偶期行為的重要要素與是對睾酮水平敏感.(參考文獻 10011,10883) 似乎在 1 歲達成性成熟, 以繁殖實驗為依據.(參考文獻 10011) 隆起的電容器完成分化與功能的在仔魚在第 9 日子; 發電器與電容器在第一次向外覓食的時候兩者都出現在仔魚。 (參考文獻 10605)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Eggs of about 3 mm diameter are deposited in crevices. Several days up to 2-3 weeks between batch spawnings. Larvae hatch after 4 days and start feeding on day 11.南美洲: 圭亞那巴西與祕魯; 哥倫比亞與委內瑞拉的河, 包括 Catatumbo 河。
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)
瀕危 (EN) (B1ab(iii)+2ab(iii)); Date assessed: 12 December 2022
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00145 - 0.00871), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (tm=1).
Fishing Vulnerability (Ref.
59153): Low vulnerability (17 of 100).
