Salmonids are a family of fish that includes species such as salmon, trout, and char. They are primarily found in freshwater and saltwater environments across the Northern Hemisphere. Salmonids are known for their streamlined bodies and are often characterized by their ability to migrate between freshwater and saltwater, particularly during their spawning cycles. These fish are important both ecologically and economically. They serve as a food source for various predators, including birds and mammals, and are also popular among anglers. Many species of salmonids are valued for their taste and are commonly farmed or caught in the wild for consumption.