Species profile · Boidae

Epicrates cenchria

Complete care sheet and morph genetics registry for the brazilian rainbow boa — husbandry parameters, diet, breeding and pairing calculator.

BRBBoa arc-en-ciel du BrésilRoter RegenbogenboaSalamanta (Local Brazil name)Rainbow Boa
Adult size
1.5–1.9 m
Lifespan
20–25 yrs
Difficulty
Intermediate
Temperament
Docile
Activity
Nocturnal
Reproduction
Viviparous
01

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

Night min22 °C
Cool side24–26 °C
Warm side28–30 °C

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.

Enclosure (adult)
120 × 60 × 60 cm

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.

Humidity
70–90 %

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.

Substrate
Coconut fibre (coco coir)Coconut chips/barkCypress mulchSphagnum moss (humid areas and humid hide)

A moisture-retaining substrate, kept damp but never waterlogged to prevent scale rot. Clean soiling regularly.

UVB
Optional

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.

Water source
Always available

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.

Origin
Boidae

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.

02

Feeding & health

Diet

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.

Breeding
Viviparous

One litter per year after thermal and photoperiodic cycling. Neonates ~30-40 cm, independent but very sensitive to dehydration from birth.

Health watch points
  • 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
03

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
Named combos — 2 documented combined morphs
GhostSnow
04

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).

GeneParent AParent B
Expected clutchSelect at least one gene on a parent.
05

Frequently asked questions

Answers to the most common questions about keeping the brazilian rainbow boa.

How big does an adult Brazilian Rainbow Boa get?
An adult Brazilian Rainbow Boa typically measures 1.5–1.9 m (total adult length. females are markedly larger and bulkier than males; a few exceptional individuals approach 2 m.).
What temperature and humidity does a Brazilian Rainbow Boa need?
A gradient of roughly 24–26 °C on the cool side to 28–30 °C on the warm side. Humidity 70–90 %.
What does a Brazilian Rainbow Boa eat?
Strict carnivore (rodents): Mice and rats of appropriate size (dead/thawed prey); occasionally chicks/birds..
Is the Brazilian Rainbow Boa a good reptile for beginners?
Intermediate level. NON-venomous constrictor. Generally docile and easy to handle as an adult; neonates and juveniles are often nervous and quick to bite defensively. Calm, short and regular handling softens the temperament. Avoid all handling during digestion and shedding. Plan ahead: a lifespan of 20–25 yrs.

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