Blenny
Alternative names: Blennioidei
Blenny is a type of perciform marine, brackish, and some freshwater fish, which encompasses over 800 species. They are usually small and have elongated bodies, while their mouths and eyes are relatively large. Their tail fin is rounded.
Their dorsal fin as well as pelvic fins are long.
Blennies live in a wide variety of habitats, from rocky pools to reefs and beds of kelp. Many prefer shallow waters, but there are some species which can live in depths of up to 450 meters.