Ichthyophis billitonensis, the Billiton Island caecilian, is a species of amphibian in the family Ichthyophiidaeendemic to the Belitung island, Indonesia.[3] It was rediscovered in 2022 from Gunung Tajam, Belitung, after not having been recorded since the original description of the species in 1965.[4] This appears to be a small species, measuring 135 mm (5.3 in) in total length.[2] Habitat requirements are unknown but it probably inhabits moist lowland forests. It may be threatened by habitat loss caused by opencast tin mining.[1]
^Frost, Darrel R. (2014). "Ichthyophis billitonensis Taylor, 1965". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 January 2015.