6 July 2011

The "sarcastic fringehead" is a real fish:
"The sarcastic fringehead (Neoclinus blanchardi) is a ferocious fish which has a large mouth and aggressive territorial behaviour. 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." 
(via Best of Wikipedia)

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