Acanthonus armatus, a deep-sea teleost fish with a minute brain and large ears.


Acanthonus armatus, a deep-water benthopelagic fish, has, per unit body weight, the smallest brain and largest semicircular canals of any known teleost and possibly any vertebrate. Pertinent areas of the brainstem and the cerebellum are large; this observation suggests that the fish's lateral line and vestibular senses are particularly acute. The huge… (More)


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