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Rhacodactylus leachianus "Yate" Care Guide

Rhacodactylus leachianus "Yate"

Last updated: September 22, 2026

Rhacodactylus leachianus is the largest living gecko species and the flagship arboreal reptile of New Caledonia. The Yate locality comes from the southern end of Grande Terre, the main island, and is widely considered one of the largest, if not the largest, leachianus locale. Adults commonly reach 400-450 grams, with heavy individuals crossing 500 grams and 14-17 inches total length. Coloration runs from golden yellow through olive to dark brown, usually mostly patternless with occasional thin white blotching or a fine web overlay. Yate animals are bulky, slow-moving, and long-lived.

Housing Requirements

  • Terrarium Size: 36 x 18 x 36 Exo Terra or similar minimum for an adult pair; 36 x 24 x 48 or larger is preferred for full-grown Yate adults, which are heavy-bodied and use vertical space
  • Tank Mates: Best kept singly or as a proven, compatible pair. Do not house males together. Not all mainland pairs will work, Grande Terre lines can be incompatible, and unwatched pairs can seriously injure or kill each other. Introduce slowly and observe every interaction
  • Temperature: 72-78°F (22-26°C) daytime ambient, dropping to 65-72°F (18-22°C) at night. An 82-86°F basking spot on one end supports thermoregulation and digestion
  • Humidity: 60-80% ambient, higher briefly after nightly misting; allow the enclosure to dry between mistings to avoid mold
  • Lighting: Standard vivarium LED on a 12-hour day/night cycle; UVB is not required, powdered gecko diets (Pangea, Repashy, Black Panther Zoological) already contain D3, and dusted feeder insects supplement

Substrate & Environment

  • Bioactive ABG mix or a coco-fiber / sphagnum blend over a drainage layer
  • Sturdy cork rounds and hollowed logs, leachianus live in tree cavities in the wild and need a hide they can fully retreat into. Wooden parrot nest boxes are commonly used
  • Heavy climbing branches, thick enough to bear an adult's weight
  • Live plants (pothos, philodendron, ficus) tolerate the enclosure well and help hold humidity
  • Mist once nightly; provide fresh water in a shallow dish

Diet & Feeding

  • Staple: Powdered gecko diet, Pangea, Repashy Grubs'n'Fruit, or Black Panther Zoological Gecko Diet. Rotating two or three flavors is common practice. CGD is nutritionally complete on its own and covers a leachianus's needs
  • Adults: CGD every 2-3 days
  • Juveniles: CGD every other day
  • Insects (optional enrichment): Dubia roaches, discoid roaches, or crickets dusted lightly with calcium can be offered once weekly if the animal will take them. Some individuals eat them enthusiastically, others ignore them. Not required
  • Fresh water in a shallow dish, changed daily

Breeding

  • Mainland lines: sexual maturity around 3 years and 180+ grams, do not pair earlier
  • Introduce carefully and separate at any sign of aggression
  • Clutches of 2 eggs, laid roughly every 5 weeks through the season. Most pairs produce 2-3 clutches per year, though well-conditioned females can produce 4-6 clutches in a strong year
  • Incubation and sex determination: R. leachianus has temperature-dependent sex determination (TSD). Cooler incubation in the low 70s (72-74°F / 22-23°C) produces primarily females; warmer incubation around 80°F (26-27°C) produces primarily males. Avoid exceeding 81-82°F, as higher temperatures raise the risk of egg loss. Incubation runs roughly 60-120 days, cooler incubation takes longer
  • A mild winter cool-down (low 60s at night for 6-8 weeks) can help cue breeding but is not strictly required

Special Notes

  • One of the largest leachianus locales; adults commonly reach 400-450 grams, and heavy individuals cross 500 grams
  • Mainland leachianus have a reputation for being defensive, but most Yate individuals are territorial about their enclosure rather than truly aggressive. Removing an animal from its tank, often by lifting out the cork bark or hide it's clinging to, typically calms them within minutes. Handle-tameness varies by individual and by how much they were handled young
  • Handling: adults tolerate regular short handling sessions of roughly 10-15 minutes and can be worked with almost daily; do not handle hatchlings or animals under about six months, and wait until a new animal is fully settled and eating consistently before beginning handling. Always support the animal's full body weight, leachianus are heavy and drop-prone if unsupported
  • Long-lived; plan for a 20+ year commitment
  • Quarantine all new animals for 30+ days
  • Established US lines for Yate include AC Reptiles, Repashy's original Yate line, and Julie Bergman / Sandfire stock

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