Since 2014, how many known dancing-frog species are there?

The frogs earned their colorful moniker by unique leg movements the males make when trying to attract mates. While most male frogs simply croak to get the attention of females, male dancing frogs twist, extend, and wave their hind legs in a display called “foot-flagging.” Das believes this is because they live in fast-flowing streams, an environment too noisy for conventional croaking.