The fish are sea-trout, lake-trout, pike and perch.
The lochs and tarns are well stocked with brown trout, and the voes and gios, or narrow inlets of the sea with steep rocks on both sides, abound with sea trout.
There are also important fisheries for cod, caplin, halibut, red fish (Sebastes) and nepisak (Cyclopterus lumpus); a shark (Somniosus microcephalus) is taken for the oil from its liver; and sea-trout are found in the streams and small lakes of the south.
The waters of the Chesapeake Bay are especially rich in oysters and crabs, and there, also, shad, alewives, " striped " (commonly called " rock ") bass, menhaden, white perch and weak-fish (" sea-trout ") occur in large numbers.
These loughs and the smaller loughs, with the streams generally, afford admirable sport with salmon, sea-trout and brown trout, and Ballina is a favourite centre.