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Pollimyrus nigricans (Boulenger, 1906)

Dark stonebasher
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Pollimyrus nigricans
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Tanzania country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Lake Victoria basin (Ref. 4967, 93960), Luiche River (Ref. 93960) and Malagarazi river (Ref. 4967). Possibly other rivers of Lake Tanganyika basin (Ref. 4967).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tz.html
National Fisheries Authority: http://www.isp.msu.edu/AFRICANSTUDIES/PLEA/TAFIRI.HTM
Occurrences: Occurrences Point map
Main Ref: Eccles, D.H., 1992
National Database:

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Osteoglossiformes (Bony tongues) 骨舌魚目 (Bony tongues) > Mormyridae (Elephantfishes) 象鼻魚科 (Elephantfishes)
Etymology: Pollimyrus: Because of Dr. Max Poll, ichthyologist + Greek, myros, -ou = the male of the morey eel.
  More on author: Boulenger.

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

; 淡水 居於水底的; 河川洄游 (Ref. 10608).   熱帶

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

Africa: Lakes Victoria, Nabugabo and Kyoga, and the Kiruni River (Semliki Valley) (Ref. 4903), Malagarasi River (Ref. 54847, 98755), Rusizi River (Ref. 87863, 98755), Akagera system (Ref. 46152) and Lake Tanganyika (Ref. 36899).
非洲: 維多利亞湖, Nabugabo 湖與 Kyoga 湖; Kiruni 河 (Semliki 山谷) ,馬拉噶拉西河與坦噶尼喀湖。

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?, range 5 - ? cm
Max length : 10.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 4967)

生物學特性     字彙 (例如 epibenthic)

Favors the shallow mud bottom waters near fringing vegetation such as papyrus and Vossia (Ref. 9606). Feeds on aquatic insects, mainly chironomid larvae (Ref. 12526), on Caridina and caenid larvae (Ref. 9606), but also on algae and plankton (Ref. 36900). A male to female ratio of 1:10.5 has been noted for this species; it breeds continuously throughout the year with obvious peaks during the rains (Ref. 10608). Anadromous (Ref. 10608). Migrates up the rivers to spawn in temporary pools and streams (Ref. 4903, 10608). Oviparous (Ref. 205).

喜歡靠近岸邊植物的泥底淺水域例如紙草與 Vossia 。 主要吃 Caridina 與 caenid 仔魚。 (參考文獻 9606) 卵生的.(參考文獻 205) 對 1:10.5 的雌性比的一隻雄魚已經被注意對於這個魚種。 (參考文獻 10608) 在河上面迴游產卵.(參考文獻 10608)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

非洲: 維多利亞湖, Nabugabo 湖與 Kyoga 湖; Kiruni 河 (Semliki 山谷) ,馬拉噶拉西河與坦噶尼喀湖。

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

Gosse, J.-P., 1984. Mormyridae. p. 63-122. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3203)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 21 December 2015

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




人類使用

漁業:
FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00612 - 0.02839), b=2.85 (2.67 - 3.03), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.4   ±0.50 se; based on food items.
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (Fec = 206).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
價格種類 (Ref. 80766):   Unknown.