Leachianus Gecko - Care Sheet

Detailed Care Guides

Looking for more in-depth guidance? We’ve put together dedicated subtopic pages covering every aspect of Leachianus gecko care:

• Leachianus Gecko Enclosure Setup — tank size, enclosure types, substrate, hides and décor
• Leachianus Gecko Diet — CGD brands, live feeders, whole prey and supplements
• Leachianus Gecko Feeding Schedule — how often to feed by age group
• Leachianus Gecko Temperature & Humidity — ideal ranges, misting routines and seasonal variation
• Leachianus Gecko Lighting — UVB guidance and day/night cycles
• Leachianus Gecko Handling — taming tips, stress signals and bite safety

About Leachianus Geckos

The Leachianus Gecko (Rhacodactylus leachianus), often affectionately called the “leachie”, is the largest living gecko species in the world and one of the most fascinating reptiles in the hobby. Native to the islands of New Caledonia, these arboreal geckos are known for their impressive size, bark-like camouflage, distinctive vocalisations, and bold personalities.

Unlike smaller gecko species, leachies are not typically suited to frequent handling — they are best appreciated as display animals, where their natural nocturnal behaviours can be observed. With proper care they can live for decades, making them one of the most rewarding long-term commitments in the hobby.

Natural Habitat

Leachianus geckos originate from the humid forests of New Caledonia, where they inhabit trees, shelter in hollow trunks, and spend their lives largely elevated above the forest floor. The climate in their native range is relatively stable — moderate temperatures, high humidity, and good airflow. Replicating these conditions in captivity is essential for their long-term health.

Enclosure

Due to their size and arboreal nature, Leachianus geckos require tall enclosures with plenty of vertical climbing space. Minimum recommended size for adults is 60x45x90cm, with larger being always better. The enclosure should include sturdy branches, cork bark tubes and hollows, dense foliage for cover, and elevated feeding ledges.

→ Full Enclosure Setup Guide

Lighting

Leachianus geckos are nocturnal. A 12-hour light/dark cycle is recommended. Low-level UVB (2–5%) is beneficial, supporting vitamin D3 production and overall health, particularly for large-bodied adults and breeding females.

→ Full Lighting Guide

Temperature & Humidity

Leachianus geckos thrive at ambient temperatures of 22°C – 26°C and are highly sensitive to overheating — temperatures above 28–29°C can quickly lead to stress or fatality. Maintain humidity at 60–70% during the day, rising to 80–90% after evening misting. Always allow the enclosure to partially dry between mistings.

→ Full Temperature & Humidity Guide

Feeding

Leachianus geckos are omnivorous, eating fruit-based CGD, live insects, and as adults, occasional whole prey items such as pinkies. Complete diets from brands such as Pangea, Repashy, and Gecko Nutrition form the nutritional base. Offer gut-loaded live insects 2 times per week, dusted with calcium and D3.

→ Full Diet Guide | Feeding Schedule

Behaviour & Temperament

Leachianus geckos are known for bold, sometimes defensive personalities. They are primarily nocturnal, territorial as adults, and capable of surprisingly loud vocalisations including growling and barking. Some individuals tolerate handling well, but many do not — they can deliver a powerful bite if stressed. These animals are best suited to keepers who enjoy observing rather than frequent interaction.

→ Full Handling Guide

Housing & Compatibility

Leachianus geckos should be housed alone. Cohabitation can lead to stress and aggression. Pairs should only be introduced for controlled, supervised breeding purposes.

Health & Common Issues

• Dehydration: Increase misting frequency and check the water dish is accessible
• Metabolic Bone Disease (MBD): Caused by calcium or D3 deficiency; ensure correct supplementation
• Obesity: Reduce live insect feeding and review MRP diet portions
• Heat stress: Monitor temperatures closely, especially in summer

Important: This guide is for general husbandry information and isn’t a substitute for veterinary advice. If your gecko is unwell, contact a qualified reptile/exotics veterinarian.

Locality Differences

Leachianus geckos vary significantly in size, colouration, and pattern depending on their locality within New Caledonia. Care requirements remain broadly the same, but enclosure size and feeding amounts should be adjusted to suit the animal’s adult size.

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