Use this guide as a starting point alongside the detailed sources below. Health concerns, unexplained changes in behavior, or feeding problems belong with a reptile veterinarian.
Adult enclosure recommendation
Our recommended minimum: 35.5″ × 23.7″ × 23.7″ (90 × 60 × 60 cm), length × depth × height.
Preferred target: 35.5″ × 23.7″ × 35.5″ (90 × 60 × 90 cm), length × depth × height.
Usable internal space for 1 adult animal. One Antaresia perthensis up to ≈ 29.528″ (75 cm) total length. Measure the actual adult; the often quoted ≈ 23.622″ (60 cm) is not a reliable universal maximum.
Height is the usable internal envelope, including the space reserved for substrate and water. Check the remaining movement space and lamp clearance after installation.
The taller target follows the species retailer's multilevel housing concept while retaining our deeper floor, allowing additional connected low and middle branches with shaded cover. Its exact metric envelope is our editorial adaptation, not a tested optimum.
We retain the firsthand breeder's ≈ 23.622″ (60 cm) depth, extend length from ≈ 23.622″ to 35.433″ (60 to 90 cm) to give a larger measured adult full extension, and increase height from ≈ 11.811″ to 23.622″ (30 to 60 cm) for substrate, branches and protected heating. The retailer's larger/taller options support extra movement choices. This is our recommended welfare minimum, not scientific consensus.
Retain at least the ≈ 35.5″ × 23.7″ × 23.7″ (90 × 60 × 60 cm) envelope and a length no shorter than actual total length. A ≈ 29.528″ (75 cm) adult therefore has a ≈ 35.433″ (90 cm) full-extension route. For an unusually longer animal, enlarge length and keep at least 40% of total length in the other internal axes, following the general spatial framework; do not use snout-to-vent length for that snake rule.
- Floor space
- Keep the full ≈ 35.5″ × 23.7″ (90 × 60 cm) floor useful for covered movement between warm and cool refuges, with room beside water and rocks.
- Climbing space
- Provide stable low and middle branches and rock crevices; support rocks from the enclosure base and make retreats inspectable.
- Substrate
- Reserve ≈ 1.969″–3.937″ (5–10 cm) of cleanable, dry-topped diggable cover as our practical allowance, leaving ≈ 19.685″–21.654″ (50–55 cm) above it within the minimum envelope. Paper is a useful temporary inspection substrate; substrate depth is not a validated species requirement.
- Water
- Keep a stable clean drinking vessel continuously available and a separate localized humid retreat. No pool is required for this terrestrial plan.
- Security and ventilation
- Check every lid overlap, cable entry and door gap after equipment is installed; lock closures, guard thermostatic heat and maintain ventilation.
Evidence gaps requiring review:
- No measured species-specific UVI (ultraviolet index) target or comparative evidence settling ambient humidity practice was established; keep exposure and moisture decisions explicitly reviewed rather than importing another Antaresia dose.
Meeting these dimensions alone does not establish suitability. Check the usable layout, environmental conditions, equipment clearance and the individual animal’s requirements before occupation.
Choose an established pygmy python
Confirm Antaresia perthensis and keep its origin, hatch date and meal history. A small adult does not make an unestablished hatchling an easy purchase. Obtain records of repeated voluntary meals and the exact prey accepted before committing to the animal. House one python, with secure temporary holding ready for cleaning. Its Western Australian identity does not justify applying the same conditions to every Antaresia.
Our recommended adult enclosure
We recommend ≈ 35.5″ × 23.7″ × 23.7″ (90 × 60 × 60 cm), usable internal length × depth × height, for one adult up to ≈ 29.528″ (75 cm) total length. We prefer ≈ 35.5″ × 23.7″ × 35.5″ (90 × 60 × 90 cm) where connected branches and concealed resting places make the extra height usable. Height includes substrate. These are our editorial welfare recommendations: the breeder gives ≈ 23.7″ × 23.7″ × 11.9″ (60 × 60 × 30 cm), while a retailer offers longer and taller layouts. We retain the broad floor, extend length for complete straightening and add height for furnishings and equipment. No trial validates an exact minimum. Measure the animal rather than treating the breeder's approximate ≈ 23.622″ (60 cm) length as a maximum; the two care accounts give different upper-size estimates, and neither is a population study. Juvenile housing is temporary and must retain both warm and cool cover.
Make each part of the habitat usable
Keep a continuous route between snug refuges, with stable low branches and inspectable rock cover. Reserve ≈ 1.969″–3.937″ (5–10 cm) of suitable dry-topped diggable bedding as our layout allowance, leaving about ≈ 19.685″–21.654″ (50–55 cm) above it in the minimum enclosure before fixtures. This is a practical provision, not a proven burrowing depth. Removable paper can simplify arrival checks. Support rocks independently of loose bedding, and keep a stable drinking bowl continuously available. A larger box is unsuitable if decoration blocks travel, every refuge has the same temperature or the keeper cannot safely locate the snake.
Measure the warm retreat and the overnight low
Start with a local warm resting area near 90 °F (32 °C) and daytime occupied conditions across about 75–86 °F (24–30 °C), following the species breeder's practical protocol. Its basking measurement is not precisely defined, so record both the contact surface and nearby air rather than calling one probe the enclosure temperature. Use independent probes and a surface thermometer, guarded heaters and a thermostat. For ordinary care, keep an overnight warm refuge at or above about 70 °F (21 °C), using the newer genus veterinary recommendation; this is guidance rather than a tested physiological limit. Young animals need reliable warmth available throughout the day and night, with a cooler escape. Do not introduce breeding-style winter cooling merely because it appears in a reproduction account.
Where heat and moisture recommendations differ
The older genus veterinary sheet describes 91.4–100.4 °F (33–38 °C) basking with 60.8–68 °F (16–20 °C) at the opposite end. That is a much wider gradient than the species breeder's 89.6 °F (32 °C) local warmth and 75.2–86 °F (24–30 °C) daytime range. We choose the species-specific starting protocol and the newer veterinary night floor; a wider gradient needs a documented individual plan, not an average of the numbers. These sources describe practice, without comparative outcomes for A. perthensis.
The breeder keeps exposed conditions dry, while the retailer proposes 50–70% ambient humidity. We recommend dry resting surfaces, continuous drinking water and a small humid retreat, with ventilation and measurements near the occupied cover. Neither source establishes a universal optimum. An established animal may do well at the retailer's moderate ambient humidity if its bedding remains clean and ventilated; do not wet every surface to meet a percentage. Persistent shedding difficulty warrants a review of hydration and husbandry.
Provide daylight with shaded choices
Use a regular 12-hour day and a dark night. Daytime UVB (ultraviolet B) with complete shade is a reasonable provision under the veterinary guidance, but the reviewed sources do not establish a measured A. perthensis UVI target. Resolve the exposure for the actual lamp, distance and barriers before use; a lamp percentage or another Antaresia species' table row is not a dose for this animal. Keep warm cover available independently of visible light so nighttime heating does not illuminate the enclosure.
Feed small meals and follow condition
For an established whole-prey feeder, begin around every 7–10 days for growing youngsters and every 2–3 weeks for mature adults, using the genus veterinary guidance and adjusting to prey size, growth and body condition. Offer appropriately sized, completely thawed prey. This schedule does not solve the special feeding problem of a hatchling too small for an ordinary pinkie mouse. Acquire one already feeding reliably; assistance with tiny or persistent non-feeders belongs with an experienced keeper and reptile veterinarian. A balanced whole-rodent diet generally does not require routine vitamin powder. Record each accepted meal, comparable weights and complete sheds; do not feed for maximum growth.
Daily checks without dismantling every refuge
Check closures, water, occupied temperatures and visible condition daily. Remove waste promptly and inspect underneath the bowl. Arrange separate arrival care with a reptile veterinarian and preserve a clear transfer routine for this easily lost snake. Keep handling brief and support the body, allowing quiet digestion after meals. Weight loss, repeated regurgitation, abnormal breathing, persistent shedding problems or injuries need veterinary assessment. Show a backup keeper where the animal can hide and how each closure works; an escape check should include installed cables, not just an empty enclosure.
Sources & further reading
Read the full recommendations and check details for your animal, equipment, and local conditions.
- Fuzzy Fox: Breeding and Care of Pygmy Pythons (2019)
- ReptiChip: Pygmy Python
- The Unusual Pet Vets: Antaresia Species Caresheet
- North Shore Veterinary Specialist Centre: Antaresia care, reviewed September 2025
- Warwick et al.: Spatial considerations for captive snakes
- VCA: Snakes Feeding
- The Reptile Database: Antaresia perthensis
Original Creature Corner guide. Editorial fact and citation checks are recorded; independent veterinary review has not been performed.
