
Borneo narrow-mouth frog _ Microhyla borneensis
Microhyla borneensis is a very small species with a snout to vent length of about 18 mm (0.71 in) for females and around two thirds of this for males. It has a broadly triangular body that is flattened dorso-ventrally. The snout is obtusely pointed, the eyes are small and have round pupils and there are no visible tympani. The skin on the dorsal surface may be smooth or bear tubercles and that of the ventral surface is always smooth. The limbs are short. The hands are unwebbed and the outer digits are spatulate. The digits of the feet are partially webbed. The dorsal surface of this frog is reddish-brown, the throat is mottled brown and the ventral surface is pale.

''Microhyla borneensis'' , also known as the Matang narrow-mouthed frog, is a species of microhylid frog found in the Matang Range in Sarawak, Borneo. It was once the smallest known frog from the Old World . Adult males of this species have a snout-vent length of 10.6–12.8 mm . Tadpoles measure just 3 mm.