Ruffe
Videos
The ruffe, also known as the Eurasian ruffe or pope, is a freshwater fish found in temperate regions of Europe and northern Asia. It has been introduced into the Great Lakes of North America as an inv
Gymnocephalus cernuus Pärnu River Estonia 2010 01 06
Powan
Videos
The powan is a kind of freshwater whitefish endemic to two lochs in Scotland, Loch Lomond and Loch Eck. It has been successfully introduced in two other sites, Loch Sloy and the Carron Valley Reservoi
Ruffe
…It is now abundant throughout the Loch. There are concerns about the effect of the huge ruffe population on the endemic whitefish population known as powan (Coregonus lavaretus) as ruffe prey on their eggs. Ruffe became the principal food item for the three main fish predators found in the area: the great…
FMIB 49705 Powan