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Bagrus filamentosus Pellegrin, 1924

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Bagrus filamentosus
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Ghana country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from the Volta basin (Ref. 3066). Importance to fisheries provided by H. Dankwa, pers. comm. 06/05.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/gh.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Roberts, T., 1967
National Database:

Common names from other countries

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Siluriformes (Catfishes) > Bagridae (Bagrid catfishes)
Etymology: Bagrus: Mozarabic, bagre, taken from Greek, pagros = a fish (Dentex sp.) (Ref. 45335).
  More on author: Pellegrin.

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 居于水底的.   熱帶; 23°C - 28°C (Ref. 12468); 16°N - 8°N

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Africa: Niger River system.
非洲: 尼日河流域。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 69.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3055); 最大体重: 2.1 kg (Ref. 3013)

简单描述 检索表 | 型态特徵 | 形态测量图

背棘 (总数) : 1; 背的软条 (总数) : 10 - 11; 臀鳍软条: 12 - 13. Diagnosis: body rather elongate, 6 times longer than deep; occipital process 3-5 times longer than broad (Ref. 57125). 10-11 branched dorsal-fin rays (Ref. 57125), 1st extended into long filament, following into shorter ones (Ref. 7324, 31256, 57125). Longest filament comprised 2 to 3 times in standard length (Ref. 3036, 57125). Predorsal length comprised 2.6 to 2.9 times in standard length; head width 1.6-1.9 times in head length; width of premaxillary tooth plate 2.4-2.8 times in head length; upper caudal-fin lobe often prolonged into a short filament (Ref. 7324, 57125). Upper caudal-fin lobe comprised 2.5 to 3.5 times in standard length (Ref. 57125).
吻略圆的而且伸出.(参考文献 3055) 上颌骨触须 1.5-3.2 倍于头长 (参考文献 3032), 在稚鱼与胸鳍达到臀鳍当成鱼时; 鼻骨触须 0.2 倍于头长.(参考文献 3055) 外部的下颚触须 0.6-1 倍于头长 (参考文献 3032), 1.5-两倍内在下颚触须的长度.(参考文献 2756) 内在的下颚触须 0.42-0.56 倍于头长.(参考文献 3069) 眼 supralateral.(参考文献 2756) 后头骨活动长的, 接近背侧间者.(参考文献 3055) 背棘平滑的.(參考文獻 3069) 第一個分枝的背鰭鰭條延長到一個長的絲狀突起內了, 與較短的絲狀突起的後繼的一些.(參考文獻 31256,參考文獻 7324) 只有第一個分枝鰭條在稚魚中是絲狀的。 (參考文獻 3069, 參考文獻 2756) 長的絲狀突起 2-3 倍標準的長度; 脂鰭高度 4.1-5.7 倍進入它的基底 (參考文獻 3036) 的長度之內, 1.75個倍背鰭.(參考文獻 3056, 參考文獻 3055) 背鰭與脂鰭鰭之間的距離小的.(參考文獻 2756) 尾鰭深深地分岔。 (參考文獻 3056) 尾鰭上葉時常具有一個短的絲狀突起 (參考文獻 7324), 下葉圓的而且沒有絲狀突起.(參考文獻 3056) 胸的絲狀突起時常呈現 (參考文獻 13851,參考文獻 3036,參考文獻 3055), 達到腹鰭.(參考文獻 3069) 強的胸棘呈現。 (參考文獻 3069, 參考文獻 3032) 腹鰭更多在背鰭的 7-8 分支條下面插入。 (參考文獻 13851, 參考文獻 3036) 體色 生活標本略灰色或淡黃色的, 具有一個白色的腹面.(參考文獻 7324) 鰭灰色的, 時常有些許玫瑰色調了.(參考文獻 13851, 參考文獻 7324) 尾鰭有時有黑色的斑點; 稚魚是黑色的。 (參考文獻 7324)

生物学特性     字汇 (例如 epibenthic)

Eats fish (Ref. 51193).

吃鱼。 (参考文献 51193)

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

非洲: 尼日河流域。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Risch, L.M., 1986. Bagridae. p. 2-35. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3236)

世界自然保护联盟红皮书 (Ref. 130435)

  数据缺失 (DD) ; Date assessed: 20 April 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00384 - 0.01800), b=2.95 (2.77 - 3.13), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.9   ±0.9 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (Assuming Fec>10,000).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100).