分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Clupeiformes (Herrings) >
Dorosomatidae (Gizzard shads and sardinellas)
Etymology: Sierrathrissa: Latin, serra = saw + Greek, thrissa, -es = shad (Ref. 45335); leonensis: The generic and specific names make allusion to the known geographic range of this genus and species (Ref. 121309).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; 深度上下限 0 - 8 m (Ref. 188). 熱帶; 18°N - 0°N
Africa: rivers of West Africa (Ref. 188), from Senegal to Cameroon (Ref. 3509), including Senegal, Gambia, Bia and Niger rivers (Ref. 81269), and Wouri and Sanaga rivers in Cameroon (Ref. 51193, 81631); also in the man-made lakes Kainji in Nigeria and Volta in Ghana (Ref. 188, 81269).
非洲: 塞內加爾到喀麥隆, 顯然地在河的下游與上游中, 但是後者只在尼日的案例下被確認; 也人造的卡因基湖 (奈及利亞) 與佛塔河 (迦納).
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ?, range 2 - ? cm
Max length : 3.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 130826); common length : 2.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 188)
背棘 (總數) : 0; 背的軟條 (總數) : 12 - 15; 臀棘: 0; 臀鰭軟條: 16 - 20; 脊椎骨: 36 - 41. Diagnosis: Small, slender fishes, easily mistaken for the juveniles of Pellonula (Ref. 188). Belly rounded, with 0-10 minute pre-pelvic scutes, without arms, supporting a low membranous keel, post-pelvic scutes similar, the keel more apparent, and a W-shaped scute located at the pelvic fin bases; lower gillrakers 13-16; pelvic insertion well before dorsal fin, with 1 unbranched and 5-6 branched rays; anal fin beginning under dorsal fin base (Ref. 188, 2849, 81269, 81631, 120915, 121309). It commmonly occurs with Pellonula, which has pelvic fins with 1 unbranched and 7 branched rays, normal scutes and the pelvic fin insertion more or less below the dorsal fin origin (Ref. 188).
小又細長的魚, 容易地 Pellonula 被誤認為稚魚了。 前腹鰭鱗甲細小的,4 到 10, 沒有被支撐一個低的膜狀龍骨脊，在腹鰭之後的鱗甲的手臂相似的, 龍骨脊更明顯的。 腹鰭嵌入在背鰭正前方; 在背鰭基底下面的臀鰭開始。 鱗片顯然地除了近的尾部以外不存在。 顎大約相等, 有小的齒。
A riverine species, but also in man-made lakes (Ref. 188). Schooling in open waters and at about 2 to 8 m in Lake Kainji, rising to about 30 cm from the surface at night in Lake Volta (Ref. 188, 3034). It feeds on plankton, especially cladocerans and rotifers (Ref. 188, 120915). It breeds at about 1.8-2.0 cm standard length (Ref. 188).
出現於河也在人造的湖中。 在開放的淺水域內形成魚群,上升在湖佛塔河中在晚上到大約 30 公分。 吃浮游生物, 尤其水蚤。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 塞內加爾到喀麥隆, 顯然地在河的下游與上游中, 但是後者只在尼日的案例下被確認; 也人造的卡因基湖 (奈及利亞) 與佛塔河 (迦納).
Whitehead, P.J.P., 1985. 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(7/1):1-303. Rome: FAO. (Ref. 188)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 19 October 2019
人類使用
漁業: 商業性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00246 - 0.00977), b=2.94 (2.77 - 3.11), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.30 se; based on food items.
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 (10 of 100).
