The female frog lays eggs under rocks in streams where the water flows fast. The eggs are clear and 3.3 to 3.5 mm in diameter. The tadpoles have strong tails so they can swim in the fast water. The tadpoles eat algae on the bottom of the stream. Tadpoles that hatch early become frogs in 3-4 months. Tadpoles that hatch in the fall may stay tadpoles through the winter and become frogs the next year.