Why are there so many species of coral reef fish? According to a new study, it’s because about 50 million years ago, some fish figured out how to bite food from hard surfaces.
Some reef fish have the unexpected ability to move their jaws from side to side, biologists at the University of California, Davis have discovered. This ability – which is rare among vertebrate animals – allows these fish to feed rapidly and efficiently on algae growing on rocks.
“They are so green!” Dr. Katie DuBois exclaimed as I held the fluorescent green test tube in my hand. The contents of this test tube may look like some vile concoction from a mad science lab, but they are in fact the remnants of a marine plant called eelgrass, Zostera marina.
