Colombian Rainbow Boa

Looks how to spot one

Scales

The Colombian rainbow boa has smooth, iridescent scales that shimmer with a rainbow-like sheen in sunlight. Base colour ranges from rust brown, copper, chocolate, olive, sandy, or grey, often with a subtle darker pattern of rings along the back, spots on the sides, and stripes on the head. The belly is pale, and the eyes are very dark. Some individuals may be almost patternless.14

Personality what they are like

Juveniles are often nippy and defensive, but with gentle, consistent handling they usually become calm and easy to handle as adults. They are nocturnal and may be shy during the day. They are non-venomous constrictors, and while a bite can be painful, it is not dangerous. They may musk when stressed.31

Daily activity how busy a day looks

Nocturnal and semi-arboreal, especially when young. They need a tall enclosure with branches for climbing, as well as a secure hide. They are most active at night, so provide a day/night cycle. They do not need a large exercise area, but they do appreciate enrichment such as climbing branches and hiding spots.13

Grooming and care the hands-on bits

Humidity is the main challenge. Maintain 75-85% relative humidity during the day, with higher levels at night (80-100%). Use a suitable substrate like cypress mulch or coconut husk to retain moisture. Provide a water bowl large enough for soaking. Shedding requires adequate humidity to avoid stuck shed. Clean the enclosure regularly to prevent scale rot.34

Home where they are happiest

A vivarium of at least 4x2x2 feet (120x60x60 cm) for an adult, with a thermal gradient: basking spot around 30-32°C (86-90°F), cool side around 24-27°C (75-80°F). Night-time drop to around 22-24°C (72-75°F) is fine. Provide a hide on both warm and cool sides. Use a digital hygrometer to monitor humidity. UVB is not essential but low-level UVB can be beneficial.34

Food basics what goes in the bowl

Carnivorous. In captivity, feed frozen-thawed rodents (mice and rats). Juveniles should be fed every 5-7 days, sub-adults every 7-10 days, and adults every 10-14 days. Prey size should be appropriate to the snake's girth. Variety is beneficial; some keepers offer chicks or quail occasionally. Always use tongs to avoid accidental bites.34

Company who they like around

Solitary and territorial. They should be housed alone, except briefly for breeding. Handling should be gentle and regular to maintain tameness, but avoid handling for 48 hours after feeding to prevent regurgitation. They are not venomous, but they can bite if threatened; bites are not dangerous but can be painful.13

The story where it all began

The Colombian rainbow boa is a colour and pattern variant of the brown rainbow boa (Epicrates maurus), a species that has been kept in captivity for many decades. It is the smallest of the rainbow boas, which makes it popular among reptile keepers. The Colombian rainbow boa (E. m. colombianus) is the most commonly kept subspecies, prized for its iridescent scales and relatively manageable size. It has been bred in captivity for generations, and captive-bred individuals are widely available. Its history as a pet is tied to the broader popularity of rainbow boas, which are admired for their beauty and docile temperament when handled regularly.13

Recognised by the official bits

Reptile Database

Recognised as a distinct species with several subspecies, including the Colombian rainbow boa (E. m. colombianus).2