Cold-water fish are a type of fish that live in cold water, such as the ocean or lakes. Some examples of cold-water fish include SMELT (5 letters), cods (4 letters), tetra (5 letters), OPAH (4 letters), and COD (3 letters). SMELT are small, silvery fish that are found in cold, coastal waters. Cods are large, saltwater fish that are found in the North Atlantic and Pacific Oceans. Tetra are small, freshwater fish that are found in tropical and subtropical regions. OPAH are large, colorful fish that are found in the deep waters of the Pacific Ocean. COD is a large, saltwater fish that is found in the North Atlantic and Pacific Oceans.