Limnonectes ibanorum — Rough-backed River Frog
Some other names for this species:
Tributary Wart Frog
Several large Limnonectes species look pretty similar, and I am not expert enough to identify them confidently. L. ibanorum is my best guess here, but I wouldn't be surprised if this frog turned out to be L. paramacrodon instead, for example.
- Inger, R. F., Stuebing, R. B. 2005. A Field Guide to the Frogs of Borneo, Second Edition