Head and forebody on a rock face; the rear of the snake extends beyond the photograph.
Pythonidae
Oenpelli Python
Nyctophilopython oenpelliensis
A large non-venomous python restricted to western Arnhem Land and the sandstone country around Oenpelli.
Non-venomous
Identification and appearance
A long, slender python with pale brown, fawn or olive upperparts marked by irregular darker blotches. It inhabits sandstone country in western Arnhem Land.
Other names
Nawaran
Typical length
AROD reports a maximum total length of 430 cm. Its average-size statements conflict, so no typical adult interval is used.
Body build
slender
Key identification features
- Pale brown to olive ground colour
- Irregular darker blotches are reported
- Restricted to sandstone country in western Arnhem Land
Where it is found
Western Arnhem Land in the Northern Territory, including the sandstone escarpment region around the type locality near Oenpelli.
Habitat
Uses rugged sandstone country and nearby lowlands in Arnhem Land, especially sheltered gorges with permanent water and rainforest or paperbark cover. Shelter sites include rock cracks, caves and shaded tree canopies.
Diet
Mammals.
Reproduction
Egg-laying.
Medical significance
Non-venomous, but capable of biting. If identity is uncertain and a bite is suspected, call 000 and follow snakebite first aid.
What to do if you encounter one
Keep your distance and leave the snake a clear route away. Do not handle it, chase it for a photograph or attempt to inspect its mouth. If it is inside a building, keep people and pets clear and contact a qualified local snake catcher.
Taxonomy notes
Sources also use Morelia and Simalia; the Reptile Database follows Nyctophilopython and notes that placement remains discussed.
Sources checked
- Atlas of Living Australia — Oenpelli Python (2026-09-25)
- The Reptile Database — Nyctophilopython oenpelliensis (2026-09-25)
- AROD — Oenpelli Python (2026-09-26)
- DCCEEW — Draft Conservation Advice for Nyctophilopython oenpelliensis (2026-09-26)
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A profile is a guide, not a reason to approach or handle a snake.