Reptile atlas

Geographical Origin and Habitat: A heavily endemic, highly specialized desert gecko strictly inhabiting the brutal, baking hot, red rock gorges, spinifex grass plains, and arid sandy deserts of the Northern Territory in Australia. It spends its day in rock crevices or burrows and emerges at night to hunt.

Taxonomy and Genetics: Belonging to the family Carphodactylidae, Nephrurus amyae is the largest species within the genus of knob-tailed geckos. It represents a highly adapted lineage to the stony, arid regions of Central Australia with stable genetics.

Behavior and Habits: Strictly nocturnal and terrestrial. Solitary and highly territorial, these geckos do not tolerate cohabitation. They are known for a unique defensive display where they stand tall on their legs, inflate their throat, gape their mouth, and produce barking or squeaking sounds.

Morphology: The most massive species among Australian geckos, reaching 14-16 cm in length. The robust body is covered in spiked tubercles, and it features a short, rigid tail ending in a knob. Adult females are significantly larger and heavier, whereas males are slender and possess visible hemipenal bulges at the tail base.

Terrarium Setup: Horizontal desert setup (minimum 60x45x30 cm). Substrate must be 5-8 cm of fine red desert sand mixed with clay to allow burrows. Provide heavy, stable rocks and shelters. Keep humidity very low (20-40%).

Lighting and Heating: Maintain a basking spot at 34-36°C and a cool side at 24-26°C. Provide a moderate UVB light (7%) to prevent metabolic bone disease.

Humidity and Hydration: Keep atmospheric humidity low. Hydration is provided by lightly dampening the sand underneath the cool hide once a week or by letting the gecko lick droplets off sprayed rocks.

Feeding and Supplementation: Voracious insectivore. Feeds on crickets, Dubia roaches, and locusts. Dust prey with calcium and vitamin D3 regularly.

Compatibility: Strictly solitary and territorial. Do not cohabitate. Housing multiple specimens together will lead to severe injuries or death.

Health and Common Diseases: Vulnerable to respiratory tract infections (RTI) if humidity is too high. High risk of tail autotomy under stress; the dropped knob-tail will not grow back to its original shape.