About Leptobrachium montanum Fischer, 1885
The holotype of Leptobrachium montanum is an adult female with a snout–vent length (SVL) of 63 mm (2.5 in). For "Leptobrachium montanum lineage 1", which is considered to be the true Leptobrachium montanum from southeastern Kalimantan, two adult males measure 56–57 mm (2.2–2.2 in) SVL, and four adult females measure 49–72 mm (1.9–2.8 in) SVL. This species has a brown dorsum that mimics dead leaves, a broad head, and large eyes. The male advertisement call is a loud "quak". The tadpoles of Leptobrachium montanum are large, with a strong tail and well-developed tail fin, and can reach a total length of 70 mm (2.8 in) or more. The natural habitats of Leptobrachium montanum are submontane and montane forests at elevations between 900 and 1,800 m (3,000–5,900 ft) above sea level. While adults and juveniles move widely through forest areas, breeding occurs in small to medium-sized mountain streams with rocky beds. Tadpoles prefer quiet sections of these streams. Leptobrachium montanum is threatened by habitat loss and fragmentation, and it is present in many protected areas.
