Snake Identifier
Two-Colored Snake (Rhadinaea bicolor)
Cobra D'água (Liophis Miliaris) by WESLLEY ALENCAR CAETANO, via Wikimedia Commons, licensed under CC BY-SA 4.0
Colubrids

Two-Colored Snake

Rhadinaea bicolor

A small, slender Central American colubrid named for the sharply contrasting dark upperside and pale underside typical of the genus.

Venomous?
Non-venomous
Adult length
0.3-0.5 m (1-1.6 ft)
Range
Mexico and Central America

Found a snake like this?

Identify any snake from a photo, free.

Identify a snake

Overview

The two-colored snake is a small colubrid in the diverse Neotropical genus Rhadinaea, a group of slender, ground-dwelling snakes distributed through Mexico and Central America. Many members of this genus share a similar bicolored appearance, which gives the species group its common name.

It is not a well-known species outside of regional herpetological circles, being small, secretive, and easily overlooked in leaf litter.

The species is non-venomous and harmless to humans.

How to identify it

  • Small, slender, smooth-scaled body
  • Sharply bicolored appearance: dark brown, gray, or blackish above contrasting with a pale cream, yellow, or reddish belly
  • Narrow head barely wider than the neck, with large eyes and round pupils
  • Adults typically 30-50 cm (1-1.6 ft)
  • Lacks any hooded appearance or banding pattern that would suggest a coral snake or venomous species

Habitat & range

Inhabits humid forest floor leaf litter, forest edges, and moist lowland to mid-elevation habitats across parts of Mexico and Central America. Often found under logs, rocks, and dense leaf litter in shaded, humid microhabitats.

Behavior, diet & reproduction

Primarily diurnal or crepuscular, foraging through leaf litter for small prey such as insects, slugs, and other invertebrates. It is a docile, secretive snake that relies on cover and quick movement rather than aggression when disturbed. Reproduction is egg-laying, with small clutches consistent with its modest body size.

Frequently asked questions

Is the two-colored snake venomous?

No, it is non-venomous and harmless to humans.

How big does the two-colored snake get?

It is small, typically 30-50 cm (1-1.6 ft) long.

Where is the two-colored snake found?

It occurs in humid forest habitats of Mexico and Central America.

Why is it called the two-colored snake?

It has a sharply contrasting dark upperside and pale underside, giving it a distinct bicolored appearance.