When some marine fish eventually adapted to life in fresh water, many also acquired a more elaborate way to hear, including middle ear bones that resemble those in humans.
Two-thirds of freshwater species today rely on a specialized middle ear…

When some marine fish eventually adapted to life in fresh water, many also acquired a more elaborate way to hear, including middle ear bones that resemble those in humans.
Two-thirds of freshwater species today rely on a specialized middle ear…