Gwyniad Explained

The gwyniad (Coregonus pennantii) is a freshwater whitefish native to Bala Lake (Welsh: Llyn Tegid) in northern Wales.

The population is threatened by deteriorating water quality and by the ruffe, a fish introduced to the lake in the 1980s and now eating the eggs and fry of gwyniad. As a conservation measure, eggs of gwyniad were transferred to Llyn Arenig Fawr, a nearby reservoir, between 2003 and 2007.^{[1] [2]}

The taxonomy of the genus Coregonus is disputed; some authorities assign the gwyniad to the common whitefish (Coregonus lavaretus),^[3] and a morphological review in 2012 was unable to find any solid evidence for recognizing the gwyniad as a separate species.^[4] FishBase and the IUCN list it as a distinct species, C. pennantii.

See also

• Powan
• Schelly
• Vendace

External links

• Coregonus pennantii. Integrated Taxonomic Information System (ITIS).

Notes and References

1. Web site: Llyn Arenig Fawr Gwyniad Survey 2012 . Ian J . Winfield . Janice M . Fletcher . J Ben . James . March 2013 . Countryside Council for Wales . 18 April 2014.
2. http://www.bbc.co.uk/wales/nature/sites/species/fish/gwyniad.shtml Gwyniad
3. Web site: Conservation . Snowdonia National Park . 19 April 2014 . dead . https://web.archive.org/web/20140419013225/http://www.eryri-npa.gov.uk/visiting/places-to-visit/llyn-tegid/conservation . 19 April 2014 . dmy-all .
4. Etheridge, E.C.; C. E. Adams; C. W. Bean; N. C. Durie; A. R. D. Gowans; C. Harrod; A. A. Lyle; P. S. Maitland; and I. J. Winfield (2012). Are phenotypic traits useful for differentiating among a priori Coregonus taxa? Journal of Fish Biology 80: 387–407.