These Fish Can Walk Did you know that some fish have taken evolution into their own fins? Meet the mudskipper and the walking catfish, two species that have mastered the art of terrestrial locomotion. Using their pectoral fins, these aquatic adventurers can traverse short distances on land, hopping from one water body to another. However, be aware, the walking catfish can be a bit of an invader, especially in North America where it's not a native species. Follow for more fascinating facts about