Triangle Keelback

The triangle keelback is a natricine snake with a broad olive to olive-brown stripe along the back, marked or netted with grey-black. The reddish sides carry triangular or roughly square spots whose points reach the belly; the underside is cream and can be reddish in life. It has 19 dorsal scale rows and nine upper lip scales (Reptile Database diagnosis).

Its broad range extends from mainland Southeast Asia through Malaysia and western Indonesia, including Sulawesi and the Sangihe Islands. It lays eggs. The name trianguligerus means bearing triangles, referring to the lateral pattern. Although a published natural-history note documents diet and feeding behaviour, the accessible index did not expose its findings, so prey, habitat, activity, clutch size and incubation are not asserted here (Reptile Database).