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Diagnostic Description

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Can be distinguished from other species of Cottus in Europe by the combination of the following characters: lateral line incomplete; reaching to anal-fin base, usually with 17-25 pores; at vertical of 10th ray of second dorsal fin, lateral line clearly above horizontal midline, distance from dorsal midline to lateral line 1.5-2.1 times in distance from ventral midline to lateral line; no distinct transverse bands on pelvic fin; prickling on body variable, in juveniles usually extending to caudal peduncle (Ref. 55856).
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Armi G. Torres
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Morphology

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Analsoft rays: 11 - 14
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Biology

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Inhabits medium-sized rivers to small streams, and lake shores (Ref. 59043).
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Cottus koshewnikowi

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Cottus koshewnikowi, Koshewnikow's sculpin, is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It inhabits the upper Volga drainage and northern and eastern Gulf of Bothnia from Estonia eastward and northward to Finland and northern Sweden. It reaches a maximum length of 10.0 cm.[2] It prefers medium-sized rivers to small streams, and lake shores.

References

  1. ^ Freyhof, J. (2011). "Cottus koshewnikowi". IUCN Red List of Threatened Species. 2011: e.T135489A4131063. doi:10.2305/IUCN.UK.2008.RLTS.T135489A4131063.en. Retrieved 12 November 2021.|date= / |doi= mismatch
  2. ^ Froese, Rainer; Pauly, Daniel (eds.) (2014). "Cottus koshewnikowi" in FishBase. February 2014 version.
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Cottus koshewnikowi: Brief Summary

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Cottus koshewnikowi, Koshewnikow's sculpin, is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It inhabits the upper Volga drainage and northern and eastern Gulf of Bothnia from Estonia eastward and northward to Finland and northern Sweden. It reaches a maximum length of 10.0 cm. It prefers medium-sized rivers to small streams, and lake shores.

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