Brongersma's beautiful pit viper — Care Sheet & Morphs

Husbandry requirements

Brongersma's beautiful pit viper — origin: Endemic to southern Thailand, where it inhabits limestone karst formations and the associated humid forests (Nakhon Si Thammarat, Krabi, Trang and Surat Thani provinces). Not listed on CITES, but protected under Thai wildlife legislation: it is essential to source captive-bred individuals. Wild-caught specimens are difficult to acclimate (stress, parasitism, food refusal) and raise ethical and legal concerns..

Terrarium temperature gradient

Night min20 °C

Cool side22–25 °C

Warm side27–30 °C

A nocturnal ambush species of karst forests: NO intense hot spot or basking lamp. Create a gentle gradient using a secured, out-of-reach heat source (heat cable or heat panel controlled by a thermostat). A night-time drop to ~20 °C is beneficial and reproduces the natural cycle.

Enclosure (adult)

60 × 45 × 60 cm

Vertical arboreal terrarium, hermetically lockable and with double security (venomous snake)

Favour height and perching volume. Provide numerous horizontal and diagonal branches, dense planting (live or artificial) for cover, as well as elevated hides and a few ledges/bark pieces recalling its limestone saxicolous habitat. Locked openings, an anti-escape system and a safety airlock are recommended. Prohibit any direct access: handle only with a hook.

Humidity

70–85 %

High humidity but combined with good ventilation: stagnant, waterlogged air promotes respiratory infections. Allow surfaces to dry out partially between mistings. A humidity peak aids shedding.

Substrate

Coco fibreFertiliser-free forest soil/humusSphagnum moss (localised damp zones)Cypress/bark mulch

A substrate that retains moisture while remaining airy. Avoid standing water at the bottom. A layer of leaf litter and moss reinforces the humid microclimate and the natural look.

UVB

Optional

Not essential (nocturnal species). Low-level UVB (Ferguson zone 1, ~1-2 UVI at the upper basking surface) can be beneficial if well managed, provided shaded areas and hides allow complete avoidance.

Water source

Always available

A large container of clean water permanently available, supplemented by daily misting: this species frequently drinks the droplets deposited on the foliage and branches. Renew the water regularly and avoid any stagnant humidity.

Origin

Viperidae (sous-famille Crotalinae — vipères à fossettes)

Endemic to southern Thailand, where it inhabits limestone karst formations and the associated humid forests (Nakhon Si Thammarat, Krabi, Trang and Surat Thani provinces). Not listed on CITES, but protected under Thai wildlife legislation: it is essential to source captive-bred individuals. Wild-caught specimens are difficult to acclimate (stress, parasitism, food refusal) and raise ethical and legal concerns.

Feeding & health

Diet

Carnivore (whole prey) — Lizards and geckos in juveniles; rodents (mice, young rats) in adults.

Often easier to switch over to rodents than other Trimeresurus. Thawed prey of appropriate size (diameter ≈ that of the widest part of the body). Feed every 7 to 14 days in adults, more frequently in juveniles. Avoid overfeeding: a sedentary species prone to obesity and regurgitation. All prey handling is done with a hook/long tongs.

Breeding

Viviparous

Reproduction triggered by a mild seasonal cycle (a drop in temperatures/photoperiod and variation in humidity). Gestation of several months. Neonates are fully venomous and independent from birth: handle with a hook from day one. Breeding reserved for experienced facilities.

Health watch points

Dysecdysis (incomplete sheds) linked to overly low humidity
Respiratory infections (insufficient temperature, poor ventilation, waterlogged environment)
Stomatitis (mouth rot)
Dehydration and food refusal, especially in unacclimated or wild-caught individuals
External and internal parasitoses (mites, nematodes), common in wild specimens

Morphs & genetics

Registry of 2 documented genes for Brongersma's beautiful pit viper.

Albino (Hypothetical) amelanisticRec
Patternless (Anomaly)Rec

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

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Brongersma's beautiful pit viper × Brongersma's beautiful pit viper

Probabilities per gene (independent loci).

Expected clutchSelect at least one gene on a parent.

Frequently asked questions

Answers to the most common questions about keeping the brongersma's beautiful pit viper.

What danger does Brongersma's beautiful pit viper pose?▾

It is a venomous snake whose hemotoxic venom, with a cytotoxic component, makes a bite a genuine medical emergency. Although it is defensive rather than aggressive and relies first on its camouflage, it will strike if it feels cornered. Keeping it is reserved for keepers highly experienced with venomous snakes, equipped with hooks, restraint tubes, a double-security terrarium and a ready-to-use snakebite emergency plan; in France it requires a certificate of competence (certificat de capacité) and an establishment-opening authorization.

Should you choose a captive-bred animal?▾

Absolutely. This viper is endemic to southern Thailand, where it is protected under local wildlife legislation even though it is not listed on CITES; wild-caught specimens acclimate poorly (stress, parasitism, refusal to feed) and also raise ethical and legal concerns. A captive-born and captive-raised individual is therefore far preferable.

How large does it grow?▾

It stays modest in size for a pit viper, between 50 and 80 cm, but with a stocky, muscular body; females are noticeably larger and more massive than males.

What terrarium should you set up?▾

A vertical arboreal terrarium of at least 60 x 45 x 60 cm, hermetically lockable and with double security given how dangerous it is. Provide horizontal and diagonal branches, dense foliage, elevated hides and a few rocky ledges or bark pieces that echo its natural karst habitat.

What temperatures should you aim for?▾

No intense hot spot or basking lamp for this nocturnal ambush species: a gentle gradient between 22-25°C on the cool side and 27-30°C on the warm side is enough, with a nighttime drop to around 20°C that reproduces its natural cycle. The heat source must be secured, out of reach and controlled by a thermostat.

What humidity and substrate?▾

It likes fairly high humidity, from 70 to 85%, but always combined with good ventilation to prevent respiratory infections. A substrate based on coco fiber, fertilizer-free forest humus and sphagnum in the damp zones, topped with leaf litter and moss, recreates its forest microclimate well while staying airy.

What does it eat?▾

Juveniles hunt mainly lizards and geckos, while adults turn to rodents, mice or young rats of a suitable size, and this species in fact often switches to rodents more readily than other Trimeresurus. Feed every 7 to 14 days as an adult, always with long tongs, avoiding overfeeding since it is sedentary and prone to obesity and regurgitation.

Does it need water available?▾

Yes, a large bowl of clean water must remain accessible at all times, but it mostly drinks the droplets from daily misting deposited on the foliage and branches: without regular spraying, hydration remains insufficient.

What is its lifespan?▾

Expect 10 to 15 years on average, with some individuals approaching 18 to 20 years under very good husbandry conditions.

Can it be handled?▾

No, never bare-handed. Even though it is rather sedentary and relies on camouflage to go unnoticed, it remains a venomous species that strikes if it feels threatened: any intervention must be done with a hook, within a strict safety protocol.

How does it reproduce?▾

It is a viviparous species whose reproduction is triggered by a slight seasonal cycle of temperature and photoperiod. After a gestation of several months, the female gives birth to 5 to 15 young, already fully venomous and independent, to be handled with a hook from day one - breeding reserved for experienced facilities.

What are the main health risks?▾

Dysecdysis linked to overly low humidity, respiratory infections in a waterlogged or poorly ventilated environment, stomatitis, as well as internal and external parasitoses in wild specimens are among the most common problems. Non-acclimated animals may also become dehydrated and refuse to feed.

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