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 Algeria, 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. It is sometimes referred to Salmo trutta macrostigma, which depending on concept is either a more widespread Mediterranean taxon, or a taxon endemic to Algeria.