红鲑, also known as sockeye salmon, is a species of fish found primarily in the northern Pacific Ocean. It is recognized for its vibrant red flesh and distinctive green head during spawning season. This fish is an important part of the ecosystem and is often sought after for its rich flavor and nutritional value. The life cycle of 红鲑 involves migrating from the ocean to freshwater rivers to spawn. After hatching, the young fish, called alevins, spend time in freshwater before heading back to the ocean. This migration is crucial for their reproduction and contributes to the health of aquatic environments.