Name: Sphaerodactylus sputator. Their common name, the island least gecko, refers to their small size and the fact that they inhabit several islands.
Recommended Enclosure Size: Adults should be kept alone or in pairs in a 8x8x12 glass enclosure or 12x12x12 enclosure. Because this species does not grow very large, upgrading adults to a larger enclosure is usually unnecessary. Coco fiber-based substrates or sand-soil substrates work well. A bioactive substrate can be made with BioBedding, springtails, and isopods. Keep substrate moist. A layer of leaf litter should be added on top of the substrate. Hides should be provided; cork bark and similar items work well. Climbing materials like rocks, driftwood, cork bark, and manzanita branches can be provided. Live plants are also a welcome addition.
Temperature: Keep island least geckos between 75-80 F. A heat source is not necessary if stable temperatures are maintained. If a heat source is provided, use a low wattage heat pad or bulb to prevent overheating. Temperature should be monitored with a digital thermometer. Night temperatures should not fall below 65 F. UV light requirement debated; if used, provide plenty of shade in enclosure.
Humidity: Keep island least geckos between 55-65% humidity. Plants can be added to provide humid microclimates. Ambient humidity should be monitored with a digital hygrometer. Island least geckos should be lightly misted daily or every other day provide dew on enclosure walls and cage items from which they can drink, but enough ventilation should be provided to allow the enclosure to dry out after several hours. A shallow water dish can be provided but is not necessary with regular misting.
Size: Hatchlings are over an inch long, with adults reaching nearly 3 inches; one of the larger micro geckos, but still very small!
Age: Island least geckos are at least 4 weeks old when sold by Josh’s Frogs. It is estimated that these geckos live for 10-20 years in captivity.
Feeding: Island least geckos sold by Josh’s Frogs are fed pinhead crickets and ⅛-inch crickets. These juveniles can also be occasionally offered extra small black soldier fly larvae, melanogaster fruit flies, and springtails. Adults should be fed a staple of ⅛-inch crickets, but can also be offered black soldier fly larvae, melanogaster fruit, dwarf white isopods, and bean beetles. All feeder insects should be gutloaded and dusted with vitamin/mineral supplements, and can be offered in a food dish.
Sexing: These micro geckos are not sexually dimorphic, making sexing a bit more difficult than other species. Male island least geckos will exhibit silvery, reflective scales between their hind limbs.
Color/Pattern: Juveniles are gray-brown with brown markings and a bright orange to red tail. Adults keep similar dark brown to black markings, but become lighter with a light brown to beige background and yellow tail. Males exhibit bright yellow heads.
Social Behavior: This species is best kept alone or in a single pair.
Breeding: A light brumation period in the winter or longer days in the summer will help incite breeding. Females lay single eggs every 3 weeks in a secure area, and will often make use of strategically placed egg-laying tubes.
Natural Range: Island least geckos inhabit numerous islands in the Lesser Antilles of the Caribbean.
History in the Hobby: Despite being not too difficult to keep and breed, captive bred individuals are not often readily available. We’re excited to make this micro gecko more popular and available!
Links of Interest: How to Set Up Micro Geckos in a Bioactive Enclosure
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