Saturday, April 21 is World Fish Migration Day. Participate in a related event near you, or visit a local national wildlife refuge or national fish hatchery. And explore the U.S. Fish and Wildlife Service’s Fish Migration Station website to learn more about the importance of fish passages, aquatic habitat conservation, and species profiles for numerous and diverse native North American fishes. According to a USFWS news release, you can also consider participating in the event online using the hashtag #WorldFishMigrationDay.