The Sarcastic fringehead, (Neoclinus blanchardi), is a ferocious fish which has a large mouth and aggressive territorial behaviour from which it has been given its common name. When two fringeheads have a territorial battle, they wrestle by pressing their distended mouths against each other, as if they were kissing. This allows them to determine which is the larger fish, which establishes dominance. They are found in the Pacific, off the coast of North America, from San Francisco, California, to central Baja California and their depth range is from 3 to 73 metres (9.8 to 240 ft).