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: Microthrissa: Grek, mikros = small + Greek, thrissa, -es = shad (Ref. 45335).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性. 熱帶; 10°N - 10°S
Africa: widely distributed in the Congo River basin (Ref. 28136, 47399), from the Lower Congo River near its estuary up to the Upper Lualaba River, but excluding the Luapula-Mweru (Ref. 188).
非洲: 大部分的薩伊 [=剛果] 系統, 但是顯然地湖 Tumba 區域沒有出現或在 Luapula-Mweru 的系統; 已知來自薩伊的河口附近了 [=剛果](Boma 的周圍) 盧阿拉巴河的到上部。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 93833)
背棘 (總數): 0; 背的軟條 (總數): 13-15; 臀棘 0; 臀鰭軟條: 18 - 22; 脊椎骨: 42 - 45. Diagnosis: Body slender, its depth about 20-24% of standard length; scutes strongly keeled, beginning under pectoral fin base, with 10-15 pre-pelvic and 8-11 post-pelvic scutes; snout rather blunt or acute; lower jaw not or slightly projecting, included in upper when mouth closed, with small teeth limited to anterior part; pre-maxillae with a single row of 24-42 small conical teeth directed inwards; maxilla slender, its blade more than 3 times as long as deep, upper edge quite strongly ridged; posterior supra-maxilla slender, spatulate, with distinct anterior shaft, shaft longer than blade; lower gillrakers 17-24 (Ref. 188, 47399). Also characterized by 26-35 scales in a longitudinal series and anal fin with 18-22 rays (Ref. 47399). It differs from Microthrissa moeruensis in having a distinctly blunter snout and less scales in longitudinal series (Ref. 188, 47399).
身體細長的; 鱗甲有明顯的龍骨, 在胸鰭基底下面開始,20 到 22 總數。 吻相當鈍; 下頜不是突出, 包含在上面的內當嘴巴閉合時, 有小的齒; 前顎具有一個單列的小齒; 顎骨葉片超過 3 長度與深度比率, 上緣相當強烈地脊; 第二個上顎骨細長的﹐竹片狀的, 有明顯的前面軸。
Found in rivers and lakes, apparently in both still and running water; seems to occur in rather acid waters (Ref. 188).
在湖中但是可能不出現於河。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 大部分的薩伊 [=剛果] 系統, 但是顯然地湖 Tumba 區域沒有出現或在 Luapula-Mweru 的系統; 已知來自薩伊的河口附近了 [=剛果](Boma 的周圍) 盧阿拉巴河的到上部。
Gourène, G. and G.G. Teugels, 1989. Révision systématique du genre Microthrissa Boulenger, 1902 des eaux douces africaines (Pisces, Clupeidae). Rev. Hydrobiol. Trop. 22(2):129-156. (Ref. 47399)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 16 February 2009
人類使用
漁業: 沒有興趣
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00433 - 0.01920), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.41 se; based on food items.
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).
