Quote from Wikipedia
“Mudskippers are completely amphibious fish, fish that can use its pectoral fins to “walk” on land. Being amphibious, they are uniquely adapted to intertidal habitats, unlike most fish in such habitats which survive the retreat of the tide by hiding under wet seaweed or in tidal pools. Mudskippers are quite active when out of water, feeding and interacting with one another, for example to defend their territories. ”
You can find further information in the Wikipedia – Mudskipper link.
These royalty free photos can be used for personal or commerical