The Lithogenes wahari has some incredible adaptations for living in the fast moving water. It possesses a set of highly developed pelvic fins that resemble legs and a large strong mouth both of which allow the fish to cling and even climb up rocks to stay put in the powerful current. Indeed, when American Museum of Natural History ichthyologist Scott Schaefer tracked the climbing catfish to a tributary of the Orinoco River, he merely had to pluck the specimens off the rocks where they were hanging on tight.