Salmo cettii, or the Mediterranean trout, is a species of trout, a freshwater fish in the Salmonidae family. It lives in the Mediterranean region in Corsica, Sardinia, Sicily and on the Italian mainland in the Magra drainage and further south. It is a non-migratory fish which lives in streams and in karstic resurgences. It is smaller than 40 centimetres (16 in) in length.