Periophthalmodon schlosseri, the giant mudskipper, is a species of mudskipper native to the tropical shores of the eastern Indian Ocean and the western Pacific Ocean where it occurs in marine, brackish and fresh waters. It is most frequently found along muddy shores in estuaries as well as in the tidal zones of rivers.
It lives in a burrow in the mud and emerges from the burrow at low tide on sunny days. It can move quickly across a muddy surface and is capable of breathing both in and out of water. The giant mudskipper can grow to a length of 27 centimetres [11 in] with two black lines from eye to tail.