- brook trout, speckled trout - freshwater fish
--1 is a kind of freshwater fish
--1 is a part of brook trout, speckled trout, Salvelinus fontinalis - brook trout, speckled trout, Salvelinus fontinalis - North American freshwater trout; introduced in Europe
--2 is a kind of trout
--2 is a member of Salvelinus, genus Salvelinus
--2 has parts: brook trout, speckled trout