分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Alestidae (African tetras)
Alestidae (African tetras)
Etymology: Micralestes: Greek, mikros = small + Greek,lestes = thief (Ref. 45335).
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 大洋性; pH range: 6.0 - 7.5; dH range: ? - 16; 河川洄游 (Ref. 51243). 熱帶; 22°C - 26°C (Ref. 12468)
Africa: found in most Sahelo-Sudanese basins of West Africa (Senegal, Volta, Niger, Chad), in the Cross River basin (Ref. 80290), in Kenya (Ref. 52871), in Sudan and South Sudan (Ref. 28714) and in Ethiopia (Ref. 58460).
非洲: 發現於大多數的 Sudani-Sahalian 的查德流域，尼日，佛塔河，塞內加爾與十字河了。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 6.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 2880)
臀棘: 0; 臀鰭軟條: 18 - 22. Diagnosis: lateral line complete, 23-29 (Ref. 81279) or 26-29 (Ref. 80290) lateral line scales. Anal fin with 3 unbranched and 15-19 (Ref. 81279) or 16-19 (Ref. 80290) branched rays. 11-14 gill rakers on lower part of first branchial arch; 6/8 premaxillary teeth (Ref. 2880, 81279). Inner dentary teeth conical, monocuspid; scales of flank without melanophores concentrated along basal margin, pigment diffuse or absent (Ref. 80290). Fins colorless, at most, pinkish; caudal fin tinged with pink (Ref. 2880, 81279). Tip of dorsal fin usually blackish (Ref. 2880, 80290, 81279). Widely distributed, never found in Cavally River (Ref. 2880, 81279).
Body shape (shape guide): fusiform / normal.
身體高度 3.45-3.95 倍標準的長度.(參考文獻 42032) 頭長 3.6-4 倍標準的長度.(參考文獻 42032) 側線總是完成。 (參考文獻 2880) 在第一 ceratobranch 中的鰓耙.(參考文獻 2880) 在雄魚成魚中的性同種二形; 彎曲的臀鰭取代尖的.(參考文獻 2880) 在背鰭的頂端稚魚沒有黑色的斑點。 (參考文獻 2880) 銀色的身體有字彙側面的條紋。 (參考文獻 2880) 尾部的紅寶石-玫瑰色彩.(參考文獻 2880)
Inhabits fringing vegetation of rivers and lakes, feeding on zooplankton, beetles and other insects (Ref. 28714). Often reported in West Africa under name of M. acutidens.
Affinities: most similar to M. acutidens, from which it differs in the presence of conical, monocuspid (vs multicuspid) inner dentary teeth, inner premaxillary and outer dentary with fewer cusps, and a slightly more slender body (Ref. 80290).
棲息於河川與湖泊的岸邊植叢, 捕食浮游動物, 甲蟲與其他的昆蟲.(參考文獻 28714) 時常在 M. acutidens 的名稱下面的非洲西部報告。 附註所有的種尚比西河的典型與剛果有一個 2個顎的 polycuspid 齒的第二列與錐形類似蘇丹流域的。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 發現於大多數的 Sudani-Sahalian 的查德流域，尼日，佛塔河，塞內加爾與十字河了。
Paugy, D. and S.A. Schaefer, 2007. Alestidae. p. 347-411. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) Poissons d'eaux douces et saumâtres de basse Guinée, ouest de l'Afrique centrale/The fresh and brackish water fishes of Lower Guinea, west-central Africa. Vol. 1. Coll. Faune et Flore tropicales 42. Istitut de recherche pour le développement, Paris, France, Muséum nationale d'histoire naturelle, Paris, France and Musée royale de l'Afrique centrale, Tervuren, Belgique. 800 p. (Ref. 80290)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
無危 (LC) ; Date assessed: 01 November 2019
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00453 - 0.01754), b=2.92 (2.75 - 3.09), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (參考文獻
69278): 3.3 ±0.42 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.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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