[2] Hypleurochilus geminatusis found along the coastal waters of the Northern Gulf of Mexico on up to the Western part of the Atlantic Ocean, from Cuba north to New Jersey.

They live on hard bottoms such as oyster reefs and rock areas in estuaries.

It is a small, slender fish with eyes on top of its head and a ventral mouth with a non protractile upper jaw.

It also has an elongated body that is laterally compressed with long anal and dorsal fins with spines that are often flexible.

Crested blennies use their fine and flexible teeth to pick invertebrates from the substrate.