The River Teno (Tana in Norwegian) on the border of Finland and Norway in Northern Lapland is Finland’s most important salmon river alongside the River Tornio. The salmon catch of the Teno accounts for up to one third of the total catch of all the salmon rivers of Norway (> 400 rivers). Due to the international nature of the Teno, the river fishing is regulated by a bilateral agreement between Finland and Norway.
The RiverTeno fosters c. 30 genetically differentiated salmon populations, ranging from small tributary to large maintem populations. The Teno salmon populations are maintained by fisheries management and no fish stocking is allowed.
The current challenges of the Teno fisheries management are mixed stock fisheries targeting e.g. the vulnerable headwater salmon populations, and decreasing numbers of large multi-sea-winter salmon. A potential threat is the salmon parasite Gyrodactylus salaris.
Research and monitoring
The research and monitoring information produced by the Natural Resources Institute Finland and its Norwegian counterparts is used to evaluate the status of the different salmon populations and to plan fisheries management measures. The information is also used by, among others, the North Atlantic Salmon Conservation Organisation (NASCO) and the International Council for the Exploration of the Sea (ICES). The most important monitoring surveys include: compiling fisheries and catch statistics, estimating juvenile densities by electrofishing, counting the numbers of adult salmon and smolts in index rivers and determining the age and size of salmon as well as their origin (wild/farmed) from scale samples.
Picture on top of the page: Panu Orell/Luke