Leachianus Geckos

Leachianus Gecko (Rhacodactylus leachianus)

Overview

The Leachianus Gecko, or simply Leachie, is the largest known gecko species and is native to New Caledonia. These robust, arboreal geckos are known for their impressive size, beautiful earthy color patterns, and vocalizations, which include growls, barks, and grunts. Despite their size, Leachianus Geckos are relatively docile and popular among experienced reptile keepers. Due to their space requirements and longevity, they are ideal for dedicated hobbyists.

Physical Characteristics

• Size: Adult Leachies can reach 10-17 inches (25-43 cm) in length, depending on the locality (mainland or island) and subspecies.
• Lifespan: In captivity, they can live over 20 years with proper care.
• Appearance: Leachianus Geckos are stocky and thick-bodied, with mottled coloration that ranges from greens, grays, and browns to subtle pinks and purples. They often have skin folds and loose skin around the neck, which gives them a distinctive look.
• Distinctive Features: Known for their vocalizations, Leachies are more communicative than many other gecko species. They also have a prehensile tail that helps them balance and climb in their arboreal habitats.

Housing

• Enclosure Size: Due to their large size, adult Leachies need a spacious, vertically oriented enclosure. A 24x24x36-inch (60x60x90 cm) enclosure is recommended, with bigger always being better. A glass terrarium with ample height and space for climbing is ideal.
• Substrate: A substrate that retains humidity, such as coconut coir, sphagnum moss, or a bioactive soil mix, is suitable for Leachianus Geckos. Avoid sand or loose substrates that could be ingested.
• Temperature and Humidity: Maintain a temperature gradient in the enclosure, with a warm side around 75-82°F (24-28°C) and a cooler side around 70°F (21°C). Leachianus Geckos tolerate cooler nighttime temperatures and should not be exposed to temperatures above 85°F (29°C). Humidity should be maintained at 50-70%, achieved by misting the enclosure once or twice daily.
• Lighting: While Leachies are nocturnal and do not strictly require UVB lighting, low-level UVB (5%) can benefit their overall health and simulate a natural environment. Aim for a 12-hour light cycle for their day and night rhythm.

Décor and Enrichment

• Climbing Structures: As arboreal geckos, Leachianus Geckos thrive with plenty of climbing options, such as cork bark, branches, and vines. These structures allow them to explore their environment and exercise their natural climbing instincts.
• Hides and Plants: Provide several hiding spots throughout the enclosure to help them feel secure. Artificial or live plants can also help maintain humidity and provide a naturalistic look.

Feeding

• Diet: Leachianus Geckos can thrive on a diet of commercial powdered gecko diets (CGD) formulated specifically for New Caledonian geckos, which can be mixed with water to provide balanced nutrition. In addition to CGD, they enjoy occasional live insects, such as gut-loaded crickets or dubia roaches, as treats.
• Feeding Frequency: Feed juveniles every other day, while adults can be fed every 2-3 days. Fresh CGD should be offered regularly, and insects can be provided once a week.
• Supplements: A balanced gecko diet generally provides all necessary nutrients, but if feeding insects, dust them with a calcium supplement containing vitamin D3 occasionally.

Handling and Temperament

• Handling: Leachianus Geckos can tolerate gentle handling, but because of their size and sensitivity, they require calm and steady handling to prevent stress. Some individuals are tolerant of regular handling, while others may remain more skittish. Always allow the gecko to come onto your hand rather than reaching for it directly, as sudden movements can cause them to feel threatened.
• Temperament: While they are generally docile, each Leachie has its personality. Some are more reserved, while others can be curious or even defensive. They may vocalize when handled, especially if they feel uncomfortable, but with time, many will recognize and feel more at ease with their keepers.

Health and Maintenance

• Shedding: Proper humidity levels are essential for successful shedding. Leachianus Geckos typically shed without issue if humidity is maintained, but dry environments may cause incomplete sheds, particularly around the toes.
• Common Health Concerns: Leachianus Geckos are generally hardy, but they can develop health issues such as metabolic bone disease (MBD) without proper calcium intake. Respiratory infections may occur if humidity or temperature is incorrect. Be sure to monitor your gecko’s body condition, as weight loss or lethargy can indicate illness.

Breeding

• Breeding Season: Leachianus Geckos breed seasonally, typically in the spring and summer. Males and females should be carefully introduced, as they can sometimes be territorial and aggressive toward each other.
• Egg Incubation: Females can lay 1-2 eggs every 4-6 weeks during the breeding season. Eggs should be incubated at 74-78°F (23-26°C) and hatch after 60-90 days, depending on the temperature.

Conclusion

The Leachianus Gecko (Rhacodactylus leachianus) is an impressive and fascinating species, ideal for experienced reptile keepers looking for a long-term pet. With their manageable care requirements, unique appearance, and vocal personalities, Leachies are a rewarding addition to any serious reptile collection. Proper care and a spacious, enriched enclosure ensure a healthy and engaging life for these geckos.