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Synodontis nigromaculatus Boulenger, 1905

Blackspotted squeaker
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Synodontis nigromaculatus
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Namibia country information

Common names: Spikkel-skreeubaber, Spotted squeaker
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: commercial | Ref: Okeyo, D.O., 2000
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Okavango, Upper Zambezi, Kwando, and Chobe. Also in Caprivi, South West Africa/Namibia (Ref. 37065). Ornamental fish species (Ref. 52863). Also Ref. 54974.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/wa.html
National Fisheries Authority: http://www.benefit.org.na/
Occurrences: Occurrences Point map
Main Ref: Gosse, J.-P., 1986
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) > Mochokidae (Squeakers or upside-down catfishes) > Mochokinae
Etymology: Synodontis: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335).
  More on author: Boulenger.

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

; 淡水 底中水层性; pH range: 6.0 - 7.5; dH range: ? - 20.   熱帶; 22°C - 26°C (Ref. 2059); 11°S - 21°S

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

Africa: in the Congo River basin in the Kasai system, upper Lualaba, Luapula drainage and lakes Mweru and Bangwelo in Democratic Republic of the Congo and Zambia (Ref. 75786, 82238). Also in the upper Zambezi and Okavango (Ref. 7248, 11970, 52193, 75786), Cunene, Limpopo (Ref. 3202, 11970, 75786, 82238) and Lake Chiuta (Ref. 75786). Absent from the Lake Tanganyika drainage (Ref. 78218).
非洲: Luapula 系統, Moero , Bangwelo ,坦噶尼喀湖, Kasai ,尚比西河上游, Okovango ,庫內內河與凌波波河上游。 也出現在尚比亞剛果。 (參考文獻 7248)

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 38.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3202); 最大体重: 506.00 g (Ref. 52193)

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) : 7; 臀棘: 0; 臀鳍软条: 11 - 15.

生物学特性     字汇 (例如 epibenthic)

Prefers rocks or marginal vegetation of flowing riverine channels to lagoons or backwaters (Ref. 7248, 52193). It feeds on a variety of food including detritus, algae and plant material, insects, snails and small fish, and scavenges readily (Ref. 7248, 52193). Eggs and larvae of cichlids have been reported in stomach of this species (Ref. 78218). Oviparous (Ref. 205). Breeds during the summer rainy season (Ref. 7248, 52193), with a peak coinciding with heavy rains in January to March (Ref. 13337). Juveniles move off the floodplains when water recedes (Ref. 13337). Grows to a large size (Ref. 246).

偏爱流动到舄湖或洄水区的河峡道的岩石或杂草丛。 吃多种食物包括碎屑,藻类与植物,昆虫, 蜗牛与小鱼, 而且轻易地清理。 卵生的.(参考文献 205) 在夏天期间进行繁殖雨季。 (参考文献 7248)

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

Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).非洲: Luapula 系統, Moero , Bangwelo ,坦噶尼喀湖, Kasai ,尚比西河上游, Okovango ,庫內內河與凌波波河上游。 也出現在尚比亞剛果。 (參考文獻 7248)

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

Gosse, J.-P., 1986. Mochokidae. p. 105-152. 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. 3202)

世界自然保护联盟红皮书 (Ref. 130435)

  最不相关 (LC) ; Date assessed: 01 May 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

渔业: 自给性渔业; 游钓鱼种: 是的; 水族馆: 商业性
FAO(Publication : search) | FishSource |

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Trophic ecology
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Ecology
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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=0.01479 (0.00841 - 0.02600), b=2.87 (2.72 - 3.02), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.4   ±0.3 se; based on diet studies.
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (K=0.8).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (21 of 100).
价格分类 (Ref. 80766):   Unknown.