Almost all salmonids are anadromous, meaning they migrate upstream from the ocean or larger rivers and lakes to reproduce in protected freshwater streams and rivers. The salmonids are among the most popular and sought-after food fishes in the world, and based on archaeological evidence, they have been on human menus for thousands of years.
The ecological health of wild salmonids varies widely with species. Some species of trout are thriving and expanding their range, while some salmon stocks teeter on the verge of extinction due to habitat loss or degradation.