Gwyniad Explained

The gwyniad (Coregonus pennantii) is a freshwater whitefish native to Bala Lake (cy|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

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. Web site: Gwyniad . BBC Wales Nature & Outdoors. 2014.
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. I. J. Winfield. 2012. Are phenotypic traits useful for differentiating among a priori Coregonus taxa? . Journal of Fish Biology. 80. 387–407. 10.1111/j.1095-8649.2011.03189.x.