- any of several gobies of the genera Periophthalmus and Boleophthalmus, of tropical seas from Africa to the East Indies and Japan, noted for the habit of remaining out of water on mud flats for certain periods and jumping about when disturbed.
- any of various gobies of the genus Periophthalmus and related genera that occur in tropical coastal regions of Africa and Asia and can move on land by means of their strong pectoral fins