Staurois tuberilinguis (common names: Borneo splash frog, green-spotted rock frog) is a semi-aquatic amphibian of the true frog family (Ranidae). This diurnal and crepuscular frog is also commonly associated with its very close relative Staurois parvus (common name: Borneo rock frog). In fact, many do not consider the two species to be taxonomically separate. This species is commonly found within the tropical rainforests of on Borneo, Malaysia next to fast-flowing rivers and streams. Due to the frog’s noisy choice of habitat, S. parvus are well-known for their multi-modal system of communication that combines acoustic calls with visual display signals. S. parvus seems to be in decline in part of its range, but overall is listed as being of "least concern" in the IUCN Red List of Threatened Species. It is threatened by habitat loss, especially by deforestation and sedimentation of streams. Description Tadpole morphology S. parvus tadpoles possess a strongly depressed body with small subcutaneous eyes, tiny external nares, a vermiform appearance with a long tail and reduced fins, and nearly pigmentless skin. Compared to S. tuberilinguis, the two tadpoles are nearly indistinguishable; however, S. parvus contains various white isolated acini of its body and tail, while S. tuberilinguis do not. Adult morphology Adults of this species have a snout-vent length of for males and for females. They have a markedly slender head with a pointed snout and a rather short fourth finger, distinguishing the species from its relatives. Its vomer lacks teeth, and it has a lingual papilla. The eggs are unpigmented. Additionally, there is an array of nanopillars across the ventral surface of the frog's toes that serve as a form of reversible adhesive that allows S. parvus to ability to remain steady even under running water conditions. Close relatives S. parvus are most closely related to S. tuberilinguis. In fact, aside from one or two morphological differences, the two species are virtually indistinguishable from each other. Genetic analysis tests have also shown that these two species are nearly the same genetic sequence. Therefore, there has been much discussion as to whether these two species are in fact taxonomically distinct. Other close relatives of S. parvus include Staurois guttatus and Staurois latopalmatus. Habitat and distribution The species is found in northern Borneo in Sabah and Sarawak (Malaysia), Brunei, and northeastern Kalimantan (Indonesia) at up to above sea level. A smaller relative, only known from the Crocker Range in