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).
More on author: Vaillant.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
Africa: Ogowe and Congo River basins in Central Africa (Ref. 3188, 56367, 81628). Reports from West Africa (Ref. 4537) refer to Polypterus retropinnis lowei, which is now a synonym of Polypterus palmas (Ref. 122071).
非洲: 剛果河流域中游與歐固耶河河.(參考文獻 3188)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 34.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 51884)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 7 - 9; 臀棘: 12 - 15; 脊椎骨: 55 - 58. Diagnosis: Polypterus retropinnis is distinguished from all other species of Polypterus except P. mokelembembe, P. ornatipinnis, P. teugelsi, P. polli and P. palmas in having a high predorsal-scale count: 26-34 vs. 11-25 (Ref. 56367). It differs from P. ornatipinnis, P. teugelsi and P. polli in having 56-59 lateral-line scales vs. 61-65 in P. ornatipinnis and P. teugelsi and 52-55 in P. polli; from P. palmas by having a single large black blotch on the pectoral-fin base vs. numerous small spots on posterior part of base; and from P. mokelembembe by having a narrower first dorsal-fin spine being 4,6-6,1% of head length vs. 6,4-8,1%, a greater internostril distance being 14,3-18,0% of head length vs. 11,6-13,7%, and more pectoral-fin rays, 30-34 vs. 23-29 (Ref. 56367). Jaws mostly about the same length, the upper jaw sometimes a little longer than lower jaw; pectoral fin not reaching dorsal-fin origin (Ref. 43035, 46852). In addition, living specimens of Polypterus retropinnis differ from all congeners in their iris coloration, which consists of creamy white areas and black dots alternating with each other around the iris; however, this character state is rarely visible in preserved specimens (Ref. 56367).
近圓柱形的身體.(參考文獻 43035) 顎大部份大約相同的長度, 上頜有時稍微長度超過下頜.(參考文獻 46852) 前背的長度 55.7-63.2% 的 SL.(參考文獻 51884) 背部離鰭的數字: 6-9.(參考文獻 46852, 參考文獻 51884) 背鰭與尾鰭鰭條的數字: 14-15.(參考文獻 51884) 胸鰭不延伸到背鰭起點。 (參考文獻 43035) 硬鱗:(參考文獻 42904) 56-59個側線鱗片; 身體的周圍 32-38個鱗片; 28-37個前背的鱗片,44-46個腹鰭前的鱗片.(參考文獻 46852, 參考文獻 51884) 身體的背面是灰色或者褐色的, 與腹面分得很開, 是淡黃色的.(參考文獻 46852) 在背面兩側上的網狀花紋有橄欖色的斑點;(參考文獻 41580) 也下頜有黑色的斑點, 區隔它和 Polypterus palmas.(參考文獻 44841, 參考文獻 46861) 在它的基底的胸鰭 , 黃色, 在末梢部的側邊上具有一個黑色的斑點。 (參考文獻 41580, 參考文獻 51884) 其他的鰭有褐色斑點。 (參考文獻 41580)
Facultative air-breathing (Ref. 126274); Mostly found in little rivers, swamps and flooded zones (Ref. 4910, 41580, 46852). Carnivorous (Ref. 41580).
大部份發現於小河，沼澤與被水淹沒的區域了。 (參考文獻 4910, 參考文獻 41580, 參考文獻 46852) 肉食性.(參考文獻 41580)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
非洲: 剛果河流域中游與歐固耶河河.(參考文獻 3188)
Britz, R., 2007. Polypteridae. p. 168-173. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81628)
人類使用
漁業: 沒有興趣
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 = 0.5002 [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): 2.6 ±0.26 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 to moderate vulnerability (31 of 100).
