Erythrolamprus cobella

Erythrolamprus cobella, commonly known as the mangrove snake, is a species of small semi-aquatic snake, which is endemic to South America.
Geographic range.
It is found in northern South America east of the Andes, in the Guianas, eastern Venezuela, and Trinidad and Tobago.
Description.
Adults may attain a total length of , which includes a tail long.
Dorsally, it is black or dark brown with white crossbands. Ventrally it is red with black crossbands. The upper labials are white or yellowish.
There are 8 upper labials, the 4th and 5th entering the eye. The dorsal scales, which are smooth and without apical pits, are arranged in 17 rows at midbody. Ventrals 143–163; anal plate divided; subcaudals 45–57, also divided (in two rows).
Habitat.
It lives in lowland rainforest river floodplains and coastal mangrove swamps.
Diet.
It feeds on frogs, geckos, and fish.