Snake cods rely on sharp, needle-like teeth that are easily broken. But how do you keep its bite from dulling? The strategy seems to be - keep growing new teeth, lots of teeth. The Pacific snake cod is a bad-tempered omnivorous fish with a mouth like a messy silverware drawer, its more than 500 teeth haphazardly arranged in two sets of highly mobile jaws.

To survive, Pacific snake cod must molt their teeth faster. If the same were true for human teeth, we would replace one tooth every day. "This makes braces useless," said Adam Summers, a professor of biology at the University of Washington and co-author of the study. And brushing your teeth." *** Co-author Karly Cohen, a doctoral student at the University of Washington studying feeding biomechanics, said the rate at which teeth are falling out surprised researchers.

"Our research on tooth replacement comes from For weird things like fish or piranhas, their teeth are in the forehead and it can fall out four at a time, but most fish have teeth like whitefish. " So, she adds, it's likely that most fish lose a large number of teeth every day and replace them quickly. A Toothed Ambush Predator The Pacific whiteback dolphin is a fiery, athletic fish that can grow to about 4 feet long. , an ambush predator that often indulges in cannibalism, is economically important to fishermen along the west coast of North America from Alaska to Baja California, in part because of its suitability for tortillas.

But they're not an attractive fish. "I always joke that cod and I never get along," said Emily Carr, an undergraduate at the University of South Florida and the study's lead author. We had to add tape to the corners of the tank because they would try to jump out when they saw someone walking by. I've never been bitten, but I'm sure they would try if given the chance."

Cohen noted that as a voracious hunter, the baiji will eat anything it can put in its mouth. "Cod have a set of upper and lower jaws, just like ours, but they're more flexible - they can be thrown forward and spread out. If you look at the inside of the roof of their mouth, that's also full of teeth." Then, all the way to the back of the throat, just in front of their esophagus, is the pharyngeal palate, a bony platform with teeth formed from modified gill arches."