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Polypterus weeksii Boulenger, 1898

Mottled bichir
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Image of Polypterus weeksii (Mottled bichir)
Polypterus weeksii
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Cladistii > Polypteriformes (Bichirs) 多鰭魚目 (Bichirs) > Polypteridae (Bichirs) 多鰭魚科 (Bichirs)
Etymology: Polypterus: Greek, poly = a lot of + Greek, pteron = wing, fin (Ref. 45335);  weeksii: Named after Dr. Schouteden, collector of the type-specimens (Ref. 41591, Ref. 49956).
More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 居於水底的. 熱帶

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Africa: middle Congo River basin (Ref. 3188) in Republic of Congo (Ref. 44840) and Democratic Republic of the Congo (Ref. 42907).
非洲: 剛果河的中央流域.(參考文獻 3188)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 54.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3188)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 9 - 11; 臀棘: 10 - 14. Body more or less compressed (Ref. 42873, Ref. 42901, Ref. 42907). Body depth 6.5 to 9.5 times in standard length; head length 4.25 to 5.5 times in standard length (Ref. 42907). Upper jaw slightly prominent or of equal length with lower jaw (Ref. 1878, Ref. 42907). Number of dorsal finlets: 9-11 (Ref. 42908, Ref. 51884). Number of branched dorsal and caudal rays: 15 (Ref. 49956). Pectoral fin not reaching dorsal fin origin (Ref. 42873, Ref. 45628). Ganoid scales (Ref. 42904): 57-65 lateral line scales, 44-48 scales around body, 20-26 predorsal scales (Ref. 42908, Ref. 44840, Ref. 44985). Dorsal side olive-green to gray colored, ventral side yellowish; 7 or 8 blackish bars bifurcating on the lower parts of the flanks (Ref. 1878, Ref. 4904, Ref. 44985). Fins are spotted, marbled, or irregularly barred with black (Ref. 4904).
身體約略扁長形的.(參考文獻 42873, 參考文獻 42901, 參考文獻 42907) 體高 6.5 到 9.5 倍標準的長度; 頭長 4.25 到 5.5 倍標準的長度.(參考文獻 42907) 上頜些微突出或與下頜長度相等.(參考文獻 1878, 參考文獻 42907) 背部離鰭的數字: 9-11.(參考文獻 42908, 參考文獻 51884) 分枝背鰭與尾鰭鰭條的數字: 15.(參考文獻 49956) 胸鰭不延伸到背鰭起點。 (參考文獻 42873, 參考文獻 45628) 硬鱗:(參考文獻 42904) 57-65個側線鱗片, 身體的周圍 44-48個鱗片,20-26個前背的鱗片.(參考文獻 42908, 參考文獻 44840, 參考文獻 44985) 背部兩側橄欖綠色的到灰色的, 腹的旁淡黃色的; 7 或 8條黑色的橫帶在側面的下面部份上分叉.(參考文獻 1878, 參考文獻 4904, 參考文獻 44985) 鰭是有斑點的,有大理石花紋, 或有黑色不規則條紋。 (參考文獻 4904)

生物學特性     字彙 (例如 epibenthic)

Facultative air-breathing (Ref. 126274)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

非洲: 剛果河的中央流域.(參考文獻 3188)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Gosse, J.-P., 1984. Polypteridae. p. 18-29. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). Volume I. ORSTOM, Paris and MRAC, Tervuren. 410 p. (Ref. 3188)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 16 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5002   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00195 - 0.01073), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.3   ±0.5 se; based on size and trophs of closest relatives
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):  Moderate vulnerability (42 of 100).