The family Blenniidae, commonly known as blennies, consists of small, elongated fish primarily found in shallow marine environments. They are characterized by their unique body shape, which often features a flattened head and a prominent dorsal fin that runs along their back. Blennies are typically bottom-dwellers, often residing in crevices and rocky substrates. Blennies are known for their diverse feeding habits, which can include algae grazing and predation on small invertebrates. Many species exhibit interesting behaviors, such as territorial displays and unique mating rituals. Their vibrant colors and patterns make them popular among aquarium enthusiasts.