All species for the challenges are species from the salmonidae family and native to europe. Some of the species found in europe are threatend and you can not fish for these species, so these will not be included in the challenges. The species found in Europe are in the subfamilie thymallinae, salmoninae. Within europe the following numbers of species are found.
Hucho (1 species)
Salmo (26 species of which 1 extinct)
Salvelinus (24 species of which 1 extinct)
Thymallus (3 species)