分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Clupeiformes (Herrings)
鯡形目 (Herrings) >
Engraulidae (Anchovies)
鯷科 (Anchovies) > Engraulinae
Etymology: Amazonsprattus: Composed from river Amazon + old English sprot, a small sea fish; 1597 (Ref. 45335).
More on author: Roberts.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 大洋性. 熱帶; 0°S - 3°S
South America: endemic to the Amazon system (Rio Jufari between Castanheiro Grande and Santa Fé, also Rio Negro at Santa Isabel).
南美洲: 亞馬遜河流域的特有種.(在 Castanheiro Grande 與 Santa Fe 之間的 Rio Jufari, 也在聖伊莎貝拉的尼格羅河)
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 2.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 189)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 臀棘: 0; 臀鰭軟條: 12 - 14. Mouth small, pre-maxillae absent or minute and toothless; maxilla very short, just reaching to front border of eye, with two supra-maxillae; articulation of lower jaw under hind border of pupil or just behind. Dorsal fin origin well behind midpoint of body; anal fin origin under first quarter of dorsal fin base. In life translucent or even transparent.
Body shape (shape guide): elongated; Cross section: compressed.
嘴小的, 前顎不存在或細小而無齒的; 顎骨非常短的, 正好延伸到眼的前緣, 有兩個上顎; 在瞳孔的後部邊緣下面的下頜的關節或在。正後方 背鰭起點在身體中央正後方; 在背鰭基底的第一四分之一下面的臀鰭起源。 活著時半透明的或平坦的透明。
A riverine species collected some distance up a low-gradient swampy tributary of the Rio Negro (the Rio Jufari), Brazil and in the main river, in both cases the water generally darkly tinted, acid (pH 4-5) and low in dissolved ions. Feeds on dipteran larvae and pupae; also cladocerans. Males mature at 1.43-1.62 cm SL; females at 1.59-1.82 cm. Ovarian eggs are creamy or pale orange. A female of 1.73 cm had 20 eggs in the single ovary in January.
一個河棲性魚種採集自巴西的 Rio Negro 的一個坡度緩之沼澤支流向上一些距離了與在主要的河中, 在情況中水通常暗上色, 酸的 (酸鹼度 4-5) 與離子溶解度低。 吃雙翅類昆蟲的幼生與蛹; 也捕食水蚤。 雄性在 1.43-1.62 公分 SL 時成熟; 雌性在 1.59-1.82 公分。 卵巢的卵是乳脂色或淡橘色。 1.73 公分的一條母魚在一月在單一卵巢中有 20個卵。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
A female of 1.73 cm has 20 eggs in the single ovary in January.南美洲: 亞馬遜河流域的特有種.(在 Castanheiro Grande 與 Santa Fe 之間的 Rio Jufari, 也在聖伊莎貝拉的尼格羅河)
Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (Suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/2):305-579. Rome: FAO. (Ref. 189)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 05 March 2017
人類使用
漁業: 沒有興趣
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00247 - 0.01115), b=3.14 (2.97 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.2 ±0.35 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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