Salmo peristericus, or the Prespa trout is a variety of trout, a freshwater fish in the Salmonidae family. It is endemic to the Lake Prespa watershed at the border area of Greece and the Republic of Macedonia. Four populations are known: one in the Agios Germanos stream in north-western Greece, and the others in the Brajcinska and Kranska rivers and the Leva Reka stream of Macedonia.