Smooth knob-tailed gecko — Care Sheet & Morphs

Husbandry requirements

Smooth knob-tailed gecko — origin: Australia: arid and semi-arid regions of the centre and west of the continent. The export of wildlife from Australia is strictly prohibited: all specimens available in the international trade come from captive breeding (no legal wild collection). Species not listed on CITES, but check local keeping regulations..

Terrarium temperature gradient

Night min18 °C

Cool side22–24 °C

Warm side28–32 °C

Nocturnal, burrowing species: NO intense basking spot or strong light. Create a thermal gradient with a heat mat or a cable under one end (belly heat) or a low-power source, regulated by a thermostat. A nighttime drop is beneficial, even essential: let it fall to 18-22°C at night. Check the temperature at substrate level, not just the air.

Enclosure (adult)

45 × 30 × 30 cm

Terrestrial terrarium (burrowing species)

Minimum dimensions for a single adult or a pair; favour floor area over height. Well-ventilated, closed lid. Burrowing species: provide a deep substrate (8-15 cm) capable of holding tunnels. Avoid housing males together (territoriality). Simple decor: ground-level hides, a few stable stones/bark pieces placed directly on the tank base to prevent any crushing during digging.

Humidity

30–50 %

Generally dry environment (30-40%), but permanently provide a humid hide (moist moss/paper towel or substrate kept slightly damp at the bottom), essential for a good shed and for hydration. The bottom of the sandy substrate must stay slightly damp at depth so the tunnels hold, while the surface stays dry.

Substrate

Sand (non-calcareous, fine grain)Sand/clay mixSand/loam mix

A sand-based substrate is MANDATORY: the species digs extensive burrows. A sand/clay or sand/loam mix holds tunnels better than pure sand. Depth 8-15 cm, slightly moistened at depth. Avoid commercial calcareous/scented sands. Beware the risk of impaction if sand is ingested during meals (see diet).

UVB

Optional

Not strictly necessary (nocturnal species). A low-intensity UVB (index 2 to 5%, dimmed T5 type) is nonetheless beneficial if provided; in that case provide shaded areas. If no UVB, ensure a rigorous supply of calcium + vitamin D3 by dusting.

Water source

Always available

A small shallow dish of clean water available at all times. A light nighttime misting on an area of the decor or on the humid hide aids hydration and shedding; do not soak the surface of the substrate.

Origin

Carphodactylidae

Australia: arid and semi-arid regions of the centre and west of the continent. The export of wildlife from Australia is strictly prohibited: all specimens available in the international trade come from captive breeding (no legal wild collection). Species not listed on CITES, but check local keeping regulations.

Feeding & health

Diet

Insectivore — Crickets, roaches (Blaptica dubia), occasionally darkling beetles/mealworms and other appropriately sized insects

Prey smaller than the inter-orbital space. Dusting with calcium (+ D3) at most meals and a multivitamin supplement once a week; adjust according to UVB exposure. Feed with tongs or in a shallow dish to limit sand ingestion and the risk of impaction. Gut-load insects before feeding. Adult: 2-3 meals per week; juvenile: daily. Beware of obesity from overfeeding.

Breeding

Oviparous

Clutch 1–2 eggs/young. Usually 2 eggs per clutch (sometimes 1), with several clutches possible per season. Breeding is generally triggered by a winter cooling/rest period (drop in temperatures and photoperiod) followed by a warming. Incubation of about 55 to 70 days at around 27-29°C depending on temperature; sex may be influenced by incubation temperature. Soft-shelled eggs, to be incubated in a humid substrate.

Health watch points

Dysecdysis (difficult shed) linked to too-low humidity or the absence of a humid hide
Metabolic bone disease (MBD) from calcium / vitamin D3 deficiency
Intestinal obstruction (impaction) from ingesting sand during meals
Dehydration (insufficient access to water, environment too dry with no humid zone)
Respiratory infections in case of unsuitable temperatures or stagnant humidity

Morphs & genetics

Registry of 1 documented gene for Smooth knob-tailed gecko.

Albino (T-) pilbara albinoRec

Pairing calculator

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Smooth knob-tailed gecko × Smooth knob-tailed gecko

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 smooth knob-tailed gecko.

Is the smooth knob-tailed gecko suitable for beginners, and can it be handled?▾

Yes, it's considered a species accessible to both beginners and more experienced keepers. Its skin is nonetheless thin and delicate, so it should be picked up rarely and gently — it's non-venomous but may squeak, bark, or adopt a threat posture (body raised, tail waving) if it feels disturbed.

How big does an adult get, and how do you tell it apart from Nephrurus amyae?▾

It reaches 10 to 13 cm in length as an adult, making it a small to medium-sized species, noticeably smaller and with much smoother skin than Nephrurus amyae. Its short tail ends in the genus's characteristic knob, without its cousin's spiny tubercles.

What size terrarium is needed, and does it require a deep substrate?▾

A terrarium of at least 45 x 30 x 30 cm is enough for a single adult or a pair, always favouring floor space over height. Since it's a burrowing species, it needs a deep substrate of 8 to 15 cm capable of holding tunnels, and two males should never be housed together as they are territorial.

What kind of heating should be used, given that it doesn't bask?▾

No basking spot or strong light: the gradient is created with a heat mat or cable under one end of the tank (belly heat), regulated by a thermostat, with a warm side at 28-32 °C and a cool side at 22-24 °C. A nighttime drop to 18 °C is beneficial, even essential, and temperature should be checked at substrate level, not just in the air.

What humidity should be maintained for a good shed?▾

The overall environment stays dry (30 to 40%), but a permanent humid hide — moss or dampened paper towel — is essential for hydration and a successful shed. The bottom of the sandy substrate should stay slightly damp at depth so the tunnels hold, while the surface stays dry.

Why is sand mandatory for this species?▾

Because it's an active burrower that digs extensive tunnels: a sand/clay or sand/loam mix holds burrows better than pure sand. Avoid calcium-based or scented commercial sands, and watch for the risk of impaction if sand is ingested during meals.

What does it eat, and how do you prevent it from swallowing sand?▾

It's an insectivore that feeds on crickets, roaches (Blaptica dubia), and occasionally mealworms, dusted with calcium and D3 at most meals. To limit sand ingestion, feed it with tongs or in a shallow dish, at a rate of 2 to 3 meals a week for adults (daily for juveniles).

Does it need UVB?▾

It's not strictly necessary for this nocturnal species, but a low-intensity UVB (index 2 to 5%, shaded T5 type) is still beneficial if provided. Without it, rigorous calcium and vitamin D3 dusting becomes essential.

How should its water dish and hydration be managed?▾

A small, shallow dish of clean water should be available at all times, supplemented by a light nighttime misting over an area of the decor or the humid hide, without soaking the substrate surface.

What is its lifespan?▾

Expect generally 10 to 15 years in captivity with good care, with some individuals occasionally exceeding that range — a long-term commitment to consider despite the animal's small size.

How does it reproduce?▾

It's an oviparous species that typically lays 2 eggs (sometimes 1) per clutch, with several clutches possible per season. Breeding is triggered by a winter cooling period followed by a warm-up, and incubation lasts about 55 to 70 days at around 27-29 °C.

What health issues should be watched for?▾

The most common are dysecdysis linked to humidity that's too low, metabolic bone disease from calcium/D3 deficiency, intestinal impaction from ingesting sand, dehydration in overly dry conditions without a humid zone, and respiratory infections linked to unsuitable temperature or humidity.

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