Red-sided Keelback

Xenochrophis trianguligerus body length reached 1.2 meters. The upper body is brown-gray or olive, and is decorated with a row of reddish “triangles” and blackish “inverted triangles” criss-crossing along the sides of the body. Getting to the tail, the reddish color on the sides of the body fades. The lower part of the body is whitish with a few blackish stripes. The scales of the dorsal (upper body) are arranged in 19 rows and their keels, except for one or two of the lowest rows. The ventral (lower body) scales are 134-151 pieces. There are 86-97 pairs of subkaudal scales at the bottom of the tail, and paired anal scales (covering the anus). Labial (lip) scales as many as 9 pieces. 2 anterior temporal scales on both sides of the head. The two nostrils point upwards like other types of water snakes.