The sarcastic fringehead is just too cool to not mention, and ok, sure it doesn't necessarily live in the deepest, darkest, coldest depths of the ocean, but it's still down there a little, living 10 feet or 3 meters to 240 feet or 73 meters below sea level, outside the breaker zone, along the many open coastlines. This fish usually grows to be less than 10 inches or 25 centimeters long, but have been documented to reach 12 inches or 30 centimeters in length. They are fearless and extremely aggressive fish; rushing towards anything that dare approach their burrows. Their body is elongated, slender and relatively compressed and have a long dorsal fin which extends from the back of the head to almost the caudal fin. Sarcastic fringeheads have large, rounded heads, with a huge jaw that can extend past the eye, lined with numerous needle-like teeth.