Evidence for this function first came from studies of the organ's anatomy and its nerves as well ... Its teeth are designed not so much to grab or slice fish but to prevent them from escaping ...

Fish can change their teeth quickly, which speeds up their evolution. Cichlids in African lakes show the fastest ...

In this study, Sharma and colleagues examined the anatomy and development of joints in members of two early-branching vertebrate lineages: one species of jawless fish, sea lampreys, and two ...