
Photo: honeyroll_ahmad_sah (iNaturalist) · CC BY 4.0 (May be cropped or resized)
Alcalus baluensis
Range
Endemic to northern and western Borneo
Size
21–25mm snout–vent
The Balu eastern frog, or dwarf mountain frog, is a species of frog in the family Ceratobatrachidae, endemic to northern and western Borneo. It was moved from the family Dicroglossidae in 2015. These are small but stocky frogs, typically measuring 21–25 mm in snout–vent length (Wikipedia, general species account).