Researchers say real fish can communicate with sound, too. And they say (the researchers, that is) that your speech skills and, in fact, all sound production in vertebrates can be traced back to this ability in fish. (You got your ears from fish, too.)The new study was led by Andrew Bass (we did not make this up) of Cornell University.
The scientists mapped developing brain cells in newly hatched midshipman fish larvae and compared them to those of other species. They found that the chirp of a bird, the bark of a dog and all the other sounds that come out of animals' mouths are the products of the neural circuitry likely laid down hundreds of millions of years ago with the hums and grunts of fish.
"Fish have all the same parts of the brain that you do," Bass explained.
His team traced the development of the connection from the midshipman fish's vocal muscles to a cluster of neurons located in a compartment between the back of its brain and the front of its spinal cord. The same part of the brain in more complex vertebrates, such as humans, has a similar function, indicating that it was highly selected for during the course of evolution.
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