Boophis septentrionalis. Many males were found calling along the main stream near the MNP guesthouse in the park at night.
Not sure which species this is. The blue leg is caused by the absence of the foot past the ankle.
Boophis septentrionalis is a species of frog in the Mantellidae family. It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist montanes, rivers, and heavily degraded former forest. It is threatened by habitat loss.