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Teleostei >
Perciformes/Cottoidei (Sculpins) >
Cottidae (Sculpins)
Etymology: Cottus: Greek, kottos = a fish (Ref. 45335); perifretum: Derived from the Latin fretum (strait [Fretum Gallicum: the English Channel) and the prefix peri- (around), as the species occurs in streams on both sides of the English Channel..
More on authors: Freyhof, Kottelat & Nolte.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
Europe: Great Britain; Atlantic drainages from Garonne (tributaries draining from Massif Central) to Scheldt in France and Belgium. Also in rivers Mosel and Sieg in Germany. Might also be present in other major Rhine tributaries, the French stretch of the upper Rhine and the lower Meuse. Invasive in Rhine drainage in Germany and the Netherlands, reaching upriver (southwar) to Karlsruhe. This invasive population in the Rhine is an intermediate between Cottus perifretum Cottus rhenanus and forms a distinct genetic group across its whole expansion range.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 13.4 cm TL 雄鱼/尚未辨别雌雄; (Ref. 88166); 最大年龄: 6 年 (Ref. 59043)
简单描述
检索表 | 型态特徵 | 形态测量图
臀鳍软条: 11 - 13. Differs from other species of Cottus in the North Sea and Atlantic basins by the combination of the following characters: no distinct transverse bands on pelvic fin; prickling on body extending backwards to caudal peduncle in juveniles and most adults; sometimes absent in large males; first dorsal fin marbled or black in nuptial males; eye diameter 18-21% HL; interorbital distance 0.7-1.9 times in eye diameter; last anal-fin ray connected to body by a membrane along 0.1-0.90 of its length (Ref. 55856).
Occurs in all kinds of streams and rivers including large main rivers, all kinds of shores with coarse gravel or large stones in flowing and stagnant water of rivers, harbors and backwaters (Ref. 55856). Feeds on a wide variety of benthic invertebrates (Ref. 59043).
Freyhof, J., M. Kottelat and A. Nolte, 2005. Taxonomic diversity of European Cottus with description of eight new species (Teleostei: Cottidae). Ichthyol. Explor. Freshwat. 16(2):107-172. (Ref. 55856)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00571 - 0.01597), b=3.17 (3.02 - 3.32), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
