Husbandry requirements
Brazilian Rainbow Boa — origin: Amazon Basin: Brazil and neighbouring regions of South America (French Guiana, Suriname, Venezuela, northern Bolivia). Species listed on CITES Appendix II (EU Annex B): trade is regulated — favour captive-bred (CB) animals and keep the proof-of-origin documents..
Terrarium temperature gradient
A tropical understorey species VERY sensitive to overheating: never exceed 32 °C. No true scorching hot spot (nocturnal species). Use a gentle gradient (heat mat/cable or radiant panel), which must be controlled by a thermostat. A natural night-time drop to ~22 °C is tolerated.
Horizontal terrestrial terrarium, well enclosed and with strong humidity retention, with controlled ventilation. Provide at least two hides (warm side and cool side) and a sturdy branch.
Minimum for an adult; 150 x 70 x 60 cm or more is preferable for a large individual. Juveniles, which climb more, appreciate multiple branches and hides within a secure space.
Adults 70-80% with peaks at 90% during shedding. Neonates are EXTREMELY sensitive to dehydration: maintain 80-90%+. Ensure good ventilation to avoid stagnant air and infections.
A moisture-retaining substrate, kept damp but never waterlogged to prevent scale rot. Clean soiling regularly.
Not essential (nocturnal species). Low-level UVB (Ferguson Zone 1, ~2-5% / UVI ~0.5-1) is beneficial if provided along with shaded and refuge areas. Photoperiod ~12 h.
A large bowl of clean water available at all times, wide enough to allow full immersion; renew frequently. Hydration and humidity are critical, especially for neonates and during shedding.
Amazon Basin: Brazil and neighbouring regions of South America (French Guiana, Suriname, Venezuela, northern Bolivia). Species listed on CITES Appendix II (EU Annex B): trade is regulated — favour captive-bred (CB) animals and keep the proof-of-origin documents.
Feeding & health
Strict carnivore (rodents) — Mice and rats of appropriate size (dead/thawed prey); occasionally chicks/birds.
Voracious appetite but slow metabolism: a real risk of obesity. Adult: 1 appropriate prey item every 10-14 days; juveniles more often. Prey ≈ 1 to 1.3 times the diameter of the widest part of the snake.
One litter per year after thermal and photoperiodic cycling. Neonates ~30-40 cm, independent but very sensitive to dehydration from birth.
- Respiratory infections (unsuitable temperature, ventilation or humidity)
- Poor sheds / dysecdysis linked to insufficient humidity
- Dehydration, particularly in neonates
- Scale rot if the substrate is too wet or soiled
- Obesity from overfeeding; mites
Morphs & genetics
Registry of 6 documented genes and 2 named combos for Brazilian Rainbow Boa.
- Hypo (Recessive) hypoRec
- Anerythristic aneryRec
- Albino (T+) / Caramel caramel albinoRec
- Albino (T-) amelanisticRec
- Candy StripeRec
- Pied (Paradox)Dom
Pairing calculator
Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.
Brazilian Rainbow Boa × Brazilian Rainbow Boa
Probabilities per gene (independent loci).
Frequently asked questions
Answers to the most common questions about keeping the brazilian rainbow boa.
How big does an adult Brazilian Rainbow Boa get?▾
What temperature and humidity does a Brazilian Rainbow Boa need?▾
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