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)
Eponymy: Colonel Sir James Hayes Sadler (1827–1910) was a British Army officer who served in a number of artillery regiments (1854–1882). [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性. 熱帶
Africa: Lakes Victoria, Kyoga and Nabugabo; Victoria Nile, Malawa River (Ref. 4903, 34290) and Middle Akagera (Ref. 46152). Also reported from Aswa River (Ref. 4903), Lake Rukwa basin (Ref. 27292) and Malagarazi River (Ref. 54847, 98755).
非洲: 維多利亞湖， Kyoga 湖與 Nabugabo 湖; 維多利亞尼羅河與 Malawa 河。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 13.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 27292)
背棘 (總數) : 0; 背的軟條 (總數) : 10; 臀棘: 0; 臀鰭軟條: 20 - 21. Anal fin margin of females straight or very slightly concave; markedly convex in males (individual rays are stouter and coarser than those of females). Silver, bluish to black dorsally; silver longitudinal band running from behind the operculum to the caudal peduncle, where it merges with an irregular black blotch which extends to the caudal fin base. All fins grey in color; other specimens all yellowish (except for pectorals). Dorsal adipose fin bright orange (Ref. 34290).
雌性的臀鰭邊緣筆直地或非常些微地凹曲; 顯著中凸在雄性中.(個別的鰭條比雌性的更矮胖與更粗) 銀色的, 藍色的到黑色的背面; 銀色的縱向條紋對尾梗在鰓蓋後面延續的, 在那裡它合併有一個延伸到尾鰭基底的不規則的黑色斑塊。 所有的鰭灰色的顏色; 其他的標本所有的淡黃色的.(除了胸鰭) 背部的脂鰭鮮橘色的.(參考文獻 34290)
In Lake Victoria found in shallow inshore areas with papyrus and other aquatic vegetation (Ref. 34290). In Lakes Kyoga and Nabugabo amongst marginal vegetation; believed to run up rivers during rainy season to spawn (Ref. 4903). Present in lake and affluents in the Lake Rukwa basin (Ref. 27292). Feeds on aquatic plants and surface insects (chironomid pupae), rarely on fishes (Ref. 12526). Appears in small quantities in markets (Ref. 4967).
出現於在紙草植物附近的水池。 (參考文獻 9606) 吃昆蟲。 (參考文獻 13624) 出現少量地在市場中。 (參考文獻 4967)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 維多利亞湖， Kyoga 湖與 Nabugabo 湖; 維多利亞尼羅河與 Malawa 河。
Seegers, L., 1996. The fishes of the Lake Rukwa drainage. Ann. Mus. R. Afr. Centr., Sci. Zool., 278:1-407. (Ref. 27292)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 24 September 2015
人類使用
漁業: 低經濟
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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00496 - 0.02540), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.40 se; based on food items.
Generation time: 2.4 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (K=4.6).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (27 of 100).
![Image of Brachyalestes sadleri (Sadler\](/images/thumbnails/jpg/tn_Alsad_u0.jpg "Image of Brachyalestes sadleri (Sadler\")
