|A very, very angry sarcastic fringehead. Image source: realmonstrosities.com|
Looks like someone woke up on the wrong side of the bed this morning...
Pictured above is a Sarcastic Fringehead (Neoclinus Blanchardi), a fish that lives off of the Pacific Coast of North America. In terms of size, fringeheads aren't too intimidating; most fish only grow to be a foot long at the most. You don't want to make them angry, however, or you might provoke the same reaction as the fringehead in the picture. These fish are fiercely territorial and can be very aggressive when disturbed. Otherwise, you'll usually find them hiding out under a rock or in a shell, peacefully minding their own business and munching on small crustaceans.
The sarcastic fringehead in the video below had a busy day, first fighting off an invading octopus before chowing down on the unfortunate crabs who happened to be passing by (although one of them did put up quite a fight). After all of this another sarcastic fringehead who happened to be living in a nearby shell pops his head out to see what all the commotion is, and a brief episode of mouth-wrestling ensues.