walking fish
/ˌwɔːkɪŋ ˈfɪʃ/ /ˈwɔːkɪŋ ˌfɪʃ/noun
Any of various fishes capable of propelling themselves for short distances on land, including mudskippers (family Gobiidae) and snakeheads (family Channidae).
Origin
Mid 19th century; earliest use found in Samuel Goodrich (1793–1860). From walking + fish.