The leopard blenny typically measures between 3 and 4.5 inches in length, with a maximum size of about 6 inches.

The leopard blenny has a striking and very characteristic coloration. Its body is beige to light brown, entirely covered with irregular brown to dark spots resembling those of a leopard, hence its common name. These patterns may vary slightly depending on the individual or environment, providing excellent camouflage among the corals.

Its fins are often translucent, sometimes marbled, and the head shows dark lines or spots around the eyes. This mimicry allows it to blend into its reef environment while remaining inconspicuous to predators.

The leopard blenny occurs in tropical waters of the Indo-Pacific, from the Red sea and the eastern coasts of Africa to the central Pacific islands, including French Polynesia, Hawaii and southern Japan, as well as along the Great Barrier Reef in Australia.

The leopard blenny lives mainly on shallow coral reefs, usually down to about 50 feet.

The leopard blenny feeds primarily on coralline algae and microalgae, which it grazes on rocks and corals, while occasionally supplementing its diet with small invertebrates such as copepods, mollusk larvae, or planktonic crustaceans. It may also nibble on coral polyps or organic debris on the substrate.

This mixed diet allows it to efficiently adapt to the availability of food on the shallow coral reefs where it lives.

The leopard blenny is listed as many other marine species within The IUCN Red List of threatened species. The leopard blenny appears in the IUCN Red List since 2014 within the category Least Concern !