Ecsenius midas, commonly known as the Persian blenny, is a small blenny. Their base color ranges from grey-greenish to golden orange and some are even blue. The eye is a nice color of blue and the caudal fin looks deeply forked because the middle part is transparent. In nature they do shift color to resemble the fish they occur with. For example, the orange-yellow variant is usually seen with Pseudanthias squamipinnis.

These fish are usually found 2-3 meters above the bottom feeding on plankton and schooling with different anthias species. In a large Aquarium multiple blennies is possible as long as enough Territories can be formed, but in a small tank they can best be kept alone or as a proven pair. They feed mainly on zooplankton and can best be fed with live and frozen food like copepods, Artemia and small gammarus, but usually will learn to feed on high quality flakes and pellets as well!