分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 外洋の. Tropical; 7°N - 5°S
Africa: widespread in Congo River basin (Ref. 188, 28136) in the Democratic Republic of the Congo (Ref. 93833, 122734) and Central African Republic (Ref. 45441), also Lake Mweru in Zambia (Ref. 52959).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 7.0 cm SL オス/雌雄の選別がない; (Ref. 188)
背面の脊椎 (合計): 0; 背鰭 (合計): 13-14; 肛門の骨 0; 臀鰭: 16 - 20. Diagnosis: Body slender, its depth 19-27% of standard length; pre-pelvic scutes fairly strongly keeled, beginning under or just before pectoral fin base, 11-13 pre-pelvic and 10-12 post-pelvic scutes; snout pointed; lower jaw not projecting, included in upper when mouth closed, deepest at mid-point of jaw, with small saw-like teeth on either side; pre-maxillae with rather peg-like teeth, those near mid-line pointing forward; maxilla very slender, its blade over 3 times as long as deep, upper edge ridged, lower edge without denticulations; posterior supra-maxilla very small, spatulate, its shaft about as long as its blade; lower gillrakers 16-18 (Ref. 188). It differs from Potamothrissa obtusirostris and P. whiteheadi in its pointed snout, more gillrakers, 16-18 vs. 14-16 and 14-17 respectively, and first pre-pelvic scute beginning under or just before pectoral fin base (Ref. 188, 28136). Other pellonulines lack saw-like teeth at the sides of the lower jaw (Ref. 188).
Found in rivers and lakes, apparently in both running and still water (Ref. 188), but not swimming upriver in the smaller streams (Ref. 4910). The distribution of this species suggests that it tolerates a wide variety of water conditions (Ref. 188).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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のレッドリストの状況は (Ref. 130435)
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