Sphaenorhynchus mirim

[3][1][2] The adult male frog measures 15.7–18.2 mm in snout-vent length.

The skin of the dorsum is bright green in color with white spots.

[1] Some reports indicate that this frog may undergo early sexual maturation.

Scientists note that the tadpoles develop reproductive organs before undergoing metamorphosis.

The authors of the original description note that the rest of the tadpoles' bodies develop at the normal rate, making it unlikely that the development observed in their study was due to exposure to pharmaceutical pollutants.