Fish’s Ears
Although we don’t see ears of fishes, they do have ear parts inside their heads. According to the National Wildlife Federation, fishes can pick up sounds in the water through their bodies and in the ear.
They also can sense movement in the water with the lateral lines. Interestingly, sharks have the ability to sense electricity, and genes that contribute to this sense is responsible for the head and facial features in humans. Therefore sharks and humans come down to a common ancestor back in time. Our ears evolved from fish gills.
Training Fish to Jump Into Nets
Researchers at Marine Biological Laboratory at Wood’s Hole are working on a plan to train fish to catch themselves by swimming into a net when they hear a tone that signals feeding time. If the plan becomes successful it will be beneficial for fish farms. Farms could save money by letting fish to feed in the open ocean for several days and call them back.
