The male will deposit a spermatophore (a cone-shaped jelly mass with a sperm cap) by vigorously shaking his tail for about half a minute, and will then move forward one body length. Next, the male moves away while undulating the posterior part of his body and tail (resembling a "hula dance"), and the female follows. mexicanum follows the general Ambystoma pattern it first involes each animal nudging the other's cloacal region, eventually leading to a "waltz," with both animals moving in a circle. In the wild, axolotls rarely, if ever, metamorphose. ![]() Metamorphosis can be induced in axolotls via thyroid hormone injections. Juvenile and adult axolotls possess feathery, external gills and tail fins suited to an aquatic lifestyle. mexicanum is paedomorphic, which means that it retains larval characteristics in the reproductively mature adult form.
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