The eastern jumping blenny has a body which is slightly compressed and a head which has no scales and has a steep upper jaw. It is greyish to greenish yellow on its upperparts, becoming paler towards the belly. There are normally five dark saddle-like markings along its back while the flanks are marked with small irregular pearly spots and dark blotches or vertical streaks. There is a brown band which runs from the eye to the upper jaw. The maximum recorded standard length is. It can be identified from the allopatricwestern jumping blenny by having a broad membrane separating the third and fourth spine in the dorsal fin.
The eastern jumping blenny is found on shallow reefs where there are exposed rocks covered in algae, it is common in the intertidal zone and it is frequently observed at low tide on the water's edge when it can be seen to hop over damp, rocky surfaces. It is found at depths of.