Steelhead are a type of fish belonging to the salmon family, specifically the species Oncorhynchus mykiss. They are known for their striking silver color and are often found in the Pacific Ocean and rivers along the western coast of North America. Steelhead are anadromous, meaning they migrate from the ocean to freshwater rivers to spawn. These fish can grow quite large, with some individuals reaching up to 55 pounds. Steelhead are popular among anglers due to their fighting ability and are often sought after for sport fishing. They are also an important species for ecosystems and fisheries.