分類 / Names
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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); palmas: From its origin: 'Cape Palmas' (Ref. 46516).
More on author: Ayres.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 居於水底的; pH range: ? - 7.0; dH range: ? - 10. 熱帶; 26°C - 28°C (Ref. 2060); 7°N - 10°S
Africa: coastal rivers of the Gulf of Guinea, from Guinea Bissau to Liberia and upper Cavally River in Côte d'Ivoire; also in upper Casamance River in Senegal (Ref. 28149, 81263). Reports from the Congo River basin (Ref. 44840, 51193) and Democratic Republic of the Congo (Ref. 4537) probably refer to Polypterus polli, previously a subspecies of Polypterus palmas, and only known from the Congo River basin (Ref. 28149).
非洲: 在象牙海岸與賴比瑞亞東方的河流域的卡瓦利河流域向上到聖約翰河。 (參考文獻 28149)
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 35.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 28149)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 7 - 10; 臀棘: 12 - 14; 脊椎骨: 56 - 59. Diagnosis: Polypterus palmas is distinguished from other species of the genus by the upper jaw longer than lower jaw, pectoral fin not reaching the level of the first dorsal fin ray and 27-32 scales between occiput and first dorsal fin ray (Ref. 2835, 28149, 42908, 81263).
Body shape (shape guide): elongated; Cross section: circular.
圓筒形的身體.(參考文獻 28149) 上頜突出又稍微長度超過下頜.(參考文獻 3054, 參考文獻 28149, 參考文獻 42908) 背部離鰭的數字: 7-9.(參考文獻 28149, 參考文獻 51884) 胸鰭不延伸到背鰭起點。 (參考文獻 3054, 參考文獻 28149) 硬鱗:(參考文獻 42904) 55-58個側線鱗片, 身體的周圍 33-39個鱗片,25-32個前背的鱗片.(參考文獻 28149, 參考文獻 51884) 身體的背面是灰色的, 藉由形成一個密集而網狀的圖案，腹面的深灰色的到黑色的不規則的斑塊全灰白色的.(參考文獻 28149) 肉質基底那在後面的部份上胸鰭有小的斑點.(參考文獻 28149) 背鰭有斑點的, 沒有在腹鰭與臀鰭上的深色的顏色.(參考文獻 28149)
Facultative air-breathing (Ref. 126274)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 在象牙海岸與賴比瑞亞東方的河流域的卡瓦利河流域向上到聖約翰河。 (參考文獻 28149)
Hanssens, M.M., G.G. Teugels and D.F.E. Thys Van Den Audenaerde, 1995. Subspecies in the Polypterus palmas complex (Brachiopterygii; Polypteridae) from West and Central Africa. Copeia 1995(3):694-705. (Ref. 28149)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
無危 (LC) ; Date assessed: 07 June 2019
人類使用
漁業: 沒有興趣; 水族館: 商業性
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5003 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00197 - 0.01063), 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 (參考文獻
69278): 2.9 ±0.43 se; based on food items.
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec=5 observed in Aquatium is probably too low; assuming > 10 fecundity (RF)).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).
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