分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers)
鱂形目 (Rivulines, killifishes and live bearers) >
Anablepidae (Four-eyed fishes, onesided livebearers & white-eye)
四眼魚科 (Four-eyed fishes, onesided livebearers & white-eye) > Anablepinae
Etymology: onca: From its color pattern, resembling the wild cat Pantera onca; noun in apposition.
Eponymy: Reverend Leonard Jenyns (1800–1893) was a clergyman and amateur naturalist. [...] (Ref. 128868), visit book page.
More on authors: Lucinda, Reis & Quevedo.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性. 熱帶
South America: tributaries of the lower Rio Uruguai in Brazil and Uruguay.
南美洲: 在巴西與烏拉圭的 Rio Uruguai 下游的支流。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 8.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 59729)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 6 - 9; 臀鰭軟條: 10; 脊椎骨: 30. Having a large dorsal convex expansion at subdistal segments of right half of sixth anal-fin ray of adult males; distinct ovoid to circular dark spots confined to ventral half of flank posterior to pelvic fins; spots gradually more circular towards midventral line; predorsal scales 13-14; series of dashes or spots on body arranged in 6-8 irregular horizontal lines, consistent midlateral pattern absent; no swelling between the urogenital opening and anterior base of anal fin in females; no distinct dark rounded spot on the dorsal pectoral-fin base (Ref. 42933).
在雄性成魚的第六臀鰭鰭條的右半部的子末梢部片段有一個大的背部中凸的擴充; 對侷限於側面的半邊側面的圓形深色的斑點明顯的卵形體在腹鰭後面; 斑點逐漸更圓形的向腹部中央的線; 前背的鱗片 13-14; 在身體上的數列短線或斑點排列成 6-8個不規則的水平線了,一致的側面中央的圖案不存在; 在雌性中的沒有在泌尿生殖孔與前面的臀鰭基底鰭之間的膨脹; 沒有在背部胸鰭基底上的明顯的深色圓形的斑點.(參考文獻 42933)
Based on photo submitted, this species grow up to 8.0 cm TL and live for up to 7 years in captivity (P. Petersen, pers.comm. 12/2022).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在巴西與烏拉圭的 Rio Uruguai 下游的支流。
Lucinda, P.H.F., R.E. Reis and R. Quevedo, 2002. Jenynsia onca, a new species of anablepid fish (Teleostei: Cyprinodontiformes) from southern Brazil and its phylogenetic position. Ichthyol. Explor. Freshwat. 13(1):33-40. (Ref. 42933)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 27 April 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00527 - 0.01814), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 2.9 ±0.4 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 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
