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Synodontis victoriae Boulenger, 1906

Lake Victoria squeaker
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Synodontis victoriae
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Uganda country information

Common names: Nkolongo
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Lake Victoria (Ref. 1568, 4903, 82238), Lake Kyoga (Ref. 4903, 34290, 78218, 82238) and the Victoria Nile (Ref. 4903, 78218).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ug.html
National Fisheries Authority: http://isp.msu.edu/AfricanStudies/Plea/firi.htm
Occurrences: Occurrences Point map
Main Ref: Poll, M., 1971
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; 深度上下限 0 - 80 m (Ref. 34291), usually 20 - ? m (Ref. 34291).   熱帶; 23°C - 27°C (Ref. 13614)

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

Africa: Lake Victoria, Lake Kioga, Victoria Nile and Malagarasi drainage (Ref. 78218, 82238).
非洲: 維多利亞湖流域, Kyoga 湖,維多利亞尼羅河,馬拉噶拉西河。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm 9.1, range 8 - 10 cm
Max length : 35.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 34290)

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) : 6 - 7. 16-21 mandibular teeth. Maxillary barbels reaching posterior tip of the humeral process, or occasionally beyond. Mandibular barbels with slender branches. Greyish silver, with dark spots of variable size. Caudal fin occasionally spotted (Ref. 34290).
16-21个下颚齿。 上颌骨触须达到肱骨突起的后顶端, 或者偶然地超过。 颚骨触须有细长的分支。 略灰色的银色, 有深色的可变大小的斑点。 尾鳍偶然有斑点.(参考文献 34290)

生物学特性     字汇 (例如 epibenthic)

Occurs in rivers and lakes and prefers deeper water (0-80 m) (Ref. 34291), although it also occurs in shallow water (Ref. 34290). In Lake Victoria it occurs over hard and soft substrates, but is more common over soft bottoms and in water over 13 m deep; feeds on gastropod molluscs and insects (mainly chironomid larvae), and to a minor extent on fishes and ostracoda; able to extract the flesh of snails without crushing their shells (Ref. 12526). Rarely grows to lengths greater than 35 cm SL (Ref. 34290). Oviparous (Ref. 205).

栖息于湖。 最常见深度超过 20 公尺, 在软质底部之上虽然它也是知道在超过 13 的水在坚硬的底部之上出现公尺深.(参考文献 34291) 吃软件动物与昆虫。 (参考文献 13624) S. victoriae 是能在没有打破贝壳的情况下吸取蜗牛的肉.(参考文献 34291) 很少对长度大于 35 公分 SL 生长。 (参考文献 34290) 卵生的.(参考文献 205)

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: 維多利亞湖流域, Kyoga 湖,維多利亞尼羅河,馬拉噶拉西河。

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: 17 March 2016

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 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00718 - 0.02780), b=2.88 (2.72 - 3.04), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.3   ±0.48 se; based on food items.
回复力 (Ref. 120179):  中等的, 族群倍增时间最少 1.4 - 4.4年 (Fec = 1,500).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100).