Simalia amethistina

Spacious, sturdy and well-ventilated arboreal/semi-terrestrial terrarium, with solid branches and hides both up high and at ground level

Minimum dimensions for an adult; larger is always preferable for a snake of this size. Sturdy closures and locks are essential (a powerful species capable of forcing its way out). Provide branches and platforms able to bear the animal's weight.

Tropical humidity 60-80%, which may rise to ~80-90% during shedding. Ensure good ventilation to avoid stagnant air and respiratory/skin problems.

A substrate that retains moisture without becoming waterlogged. Keep it clean and dry at the surface to prevent scale rot; promptly remove droppings and soiled areas.

Not strictly essential (a nocturnal species), but low UVB (Ferguson zone 1, ~5%) combined with a day/night cycle is beneficial. In that case provide shaded areas and avoid direct exposure.

A large, heavy and stable water container allowing the animal to partly submerge; clean water renewed frequently. Also contributes to humidity.

Indonesia (Moluccas, eastern Lesser Sunda Islands), New Guinea and the Torres Strait islands. The Australian populations formerly assigned to this species now form the distinct species Simalia kinghorni. IMPORTANT: like all Pythonidae, the species is listed on CITES Appendix II (EU Annex B), so trade is regulated. Many specimens on the market are wild-caught: strongly favour captive-bred (CB) animals, as wild individuals are highly stressed, often parasitised and extremely defensive.

Carnivore (constrictor) — Rodents and birds: rats, then rabbits/guinea pigs and poultry (chicks, quail) for large adults; thawed prey sized to the snake's girth.

Very strong and rapid feeding response: feed with a hook/tongs to avoid any anticipatory bite. Adults fed roughly every 10-21 days depending on size and condition; avoid overfeeding and obesity. Long, recurved dentition adapted to gripping feathered prey.

Clutch 10–25 eggs/young. Breeding triggered by a seasonal drop in temperature. Incubation of about 75-90 days at ~30-31 °C; the female performs maternal incubation, coiling around the clutch. A powerful and defensive species: breeding manipulations reserved for experienced keepers.

• Respiratory infections (favoured by poorly managed humidity, stagnant air or overly low temperatures)
• Scale rot/dermatitis on substrate that is too damp or soiled
• Mites (Ophionyssus), especially on wild-imported specimens
• Stomatitis (mouth rot)
• Thermal burns from unprotected heat sources
• Internal parasites, common in wild specimens