Coleonyx mitratus — Fact Sheet

Coleonyx mitratus · Coleonyx mitratus

Full care guide and sources

📋 At a glance

🏠 Enclosure

• Adult enclosure: 60 × 45 × 45 cm (length × width × height).

A practical plan for one adult; furnishing and the animal’s actual size determine whether more space is needed.

One adult can be kept in a 60 × 45 × 45 cm enclosure; larger, well-covered enclosures are easier to stabilize.

The enclosure should include:

• a hot basking area and cooler retreat zones
• multiple hides or sheltered routes
• secure branches, cork, rocks, or platforms suited to the species
• fresh water that cannot be tipped easily
• strong ventilation without losing the needed humidity
• front access so maintenance does not become a chase

Keep animals singly unless there is a controlled breeding plan and space to separate them immediately. Cohabitation can cause stress, injuries, food competition, and repeated breeding pressure.

A useful layout has a warm hide near the heat source, a cooler hide, and a humid hide. The gecko should be able to cross from one side to the other under cork, stone, plants, or leaf litter rather than walking across a bare open floor.

For juveniles, start with a simpler enclosure so feeding and droppings can be monitored. Once the animal feeds reliably and sheds cleanly, add more cover and a deeper naturalistic substrate. Adults can use surprisingly complex layouts, but every hide must remain accessible for health checks.

🪨 Substrate and furnishings

The enclosure should let the animal move through cover instead of being exposed in an empty box. Use stable decor; heavy items must be supported from the floor or fixed securely before substrate is added.

Useful materials include:

• cork tubes, bark slabs, branches, and roots
• soil-based substrate appropriate to humidity needs
• live or artificial plants for cover
• tight hides where the animal can feel body contact

Quarantine new animals on simple substrate until feeding, shedding, droppings, and parasite status are understood.

Avoid sharp rock edges, loose stacks that can collapse, dusty sand, cedar or pine shavings, and reptile carpet. A soil-sand-clay mix with dry leaf litter works well when it is kept clean and compact enough that prey insects cannot disappear forever.

💡 Lighting

Provide a consistent 10-12 hour day length with bright visible light. Use a quality linear UVB lamp over part of the enclosure, leaving shaded retreats so the animal can self-regulate.

For UV planning, treat this species as Ferguson Zone 1, about UVI 0.5-1.0 with shaded hides. Measure with a Solarmeter 6.5 when possible because mesh, reflector, distance, and lamp age change the real exposure.

🌡️ Temperature

Use overhead heat from halogen or other suitable reptile heating equipment controlled safely by thermostat or dimming control. Do not heat the whole enclosure evenly.

Useful targets:

• Basking area: 31-34°C surface warmth
• Warm side: 26-29°C
• Cool side: 22-25°C
• Night: 20-23°C

Measure basking surfaces with an infrared thermometer and ambient zones with digital probes. The animal must be able to leave the basking zone completely.

A thermostat probe should be placed where it controls the heat source effectively, but it does not replace manual checks. Surface temperatures under a hide can differ from the open basking surface, so check both. If the animal always stays at the cool end or never leaves the warm hide, adjust the gradient.

💧 Humidity and water

Air humidity: 50–60%. Practical air-humidity range, not a physiological limit. Measure at animal height, away from wet surfaces and direct heat. Provide a shallow dish of fresh water and a consistently moist hide; the air reading does not describe humidity inside the hide.

Maintain humidity around 50–60% with drier and moister retreats, with local variation inside the enclosure. A single number is less useful than a stable gradient with dry resting places, humid retreats where needed, and good airflow.

The humid hide is the main safety net for shedding. It should be moist enough to prevent stuck shed on toes and tail tip, but not sour, wet, or moldy. In seasonal setups, a slightly moister period can stimulate activity, but constant dampness with poor ventilation is a common cause of skin and respiratory problems.

🪳 Feeding

This species is insectivorous. Suitable foods include small crickets, roach nymphs, small locusts, black soldier fly larvae, silkworms, and occasional soft larvae.

Feed juveniles smaller meals more often and adults less often according to body condition. Use calcium and multivitamin supplements deliberately; do not use supplements to compensate for missing UVB, poor diet, or low temperatures.

Avoid obesity. These small geckos store fat quickly when prey is too large, too frequent, or too rich. Adults should stay lean, with a visible waist and active hunting response.

Offer prey after lights dim or in the evening when the gecko is more willing to hunt. Remove uneaten crickets so they do not bite the gecko overnight. Dust most meals lightly with calcium, use a multivitamin less often, and adjust supplements if reliable UVB is provided.

🩺 Health — warning signs

Common captive problems include burns, dehydration, retained shed, parasite loads in wild-caught animals, mouth injuries, obesity, poor appetite from low basking temperatures, and stress from cramped or exposed housing.

Warning signs include weight loss, swelling, wheezing, repeated nose rubbing, weak grip, tremors, retained shed on toes or tail tip, abnormal droppings, wounds, and long refusal to feed. Check temperatures, UVB, humidity, diet, and hiding security first, but serious or persistent signs need an experienced reptile veterinarian.

A practical troubleshooting order is: confirm the warm hide temperature, confirm the humid hide, check that prey is small enough, review supplement use, and make sure the animal is not exposed by an overly bare layout. Weight loss, repeated failed sheds, swollen toes, mouth injury, or persistent refusal to feed should not be managed by guesswork.