It bears two or three distinct forms in patterns in three life stages in which adults can be easily identified by having reddish-brown or orange color with more or less black patches in whole body.
New born- 25-47cm.
Average length- 150cm. (5ft).
Maximum length- 200m.
Body stout, robust and covered with less glossy scales. Lightly keeled oval shaped scales present mostly on the top dorsal of posterior side.
Adult: Color yellow, yellowish-brown or orange. various amount of blackish color patches present in irregular manner from neck to tail.
Subadult and Juveniles: Dorsal scales orange mixed with brown or yellow color mostly; series of same shaped patches present on the top of dorsal which have darker color than ground surface. Blackish scales also present in few places which become dominant in adult stage. These blackish scales absent in hatchlings.
Belly color pinkish-red or with blackish color patches arranged irregularly at few places. Subcaudal scales paired in zig-zag manner.
Head elongated, triangular and clearly broader than neck. Covered with fragmented shields. Large eyes have rounded pupil. There are two most common patterns in two life stages.
Adults: Head color blackish, bluish black or dark red color; white color present on upper lip few times.
Juveniles and newborns: Have totally different markings like an arrow; usually one dark and bent line joins eyes followed by arrow shaped marking which reaches to the end of the head or remain in the form of triangular spot, may or may not join with the curve joining eyes. Upper lips whitish.
Long tail of same dorsal color with black patches, juveniles and subadults have irregular shape patterns or plain.