Indonesian Blue Tongue Skink

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The Indonesian blue tongue skink is a heavy bodied, ground dwelling lizard. Its scientific name is Tiliqua gigas, and gigas means giant in Greek. It is one of the largest skinks in the genus Tiliqua.

Most Indonesian blue tongue skinks sold in the United States are wild caught. That shapes almost everything about keeping one, from price to temperament.

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Three subspecies make up the group sold as the Indonesian blue tongue skink. They are Tiliqua gigas gigas, Tiliqua gigas keyensis, and Tiliqua gigas evanescens. They come from different islands across Indonesia and Papua New Guinea, including Halmahera, Ambon, the Kei and Aru Islands, and the Merauke region.

Keepers sometimes shorten the name to indo blue tongue skink. Others call it the T gigas blue tongue skink. All three forms are the same species.

The species is widespread across its island range. The IUCN Red List assesses Tiliqua gigas as Least Concern, though most animals in the US trade are still collected from the wild.

Indonesian Blue Tongue Skink Care Basics

Caring for an Indonesian blue tongue skink means building a warm, humid, tropical setup. This is not a desert species. Dry, low humidity tanks built for a bearded dragon will cause problems over time.

The core needs are a large enclosure, a real heat and UVB gradient, humid substrate, and a varied diet. See the general skinks overview for how this species compares to its relatives.

Most Indonesian blue tongue skinks are wild caught, so new arrivals often carry parasites. A checkup with a reptile veterinarian soon after purchase is a smart first step. Give a new skink several quiet weeks to settle before expecting steady feeding.

Enclosure Setup for This Species

An adult Indonesian blue tongue skink needs a floor plan of at least 4 feet by 2 feet. Bigger is always better for a lizard this size. Front opening enclosures make daily care easier than top opening tanks, since these skinks live at ground level.

The general lizard enclosure guide covers build basics that apply across species. Substrate should hold humidity and allow some digging. A mix of organic topsoil, coconut fiber, and leaf litter, several inches deep, works well.

Provide a hide on the warm end and another on the cool end. Add a shallow water dish large enough to soak in. Keep only one adult per enclosure, since adults from this genus can fight, sometimes seriously.

Heating and UVB Lighting

Set a basking surface of roughly 95 to 105 degrees Fahrenheit at one end. Use a probe thermometer, not the dial on the fixture. The cool end should sit around 75 to 85 degrees Fahrenheit.

Night temperatures can drop once the basking light is off. They should not fall much below the mid sixties. A real thermal gradient lets the skink regulate its own body heat through the day.

A full length T5 HO UVB fixture, such as an Arcadia ProT5 Kit Forest 6%, is standard for this genus. Replace it yearly, even if it still lights up, since UVB output fades first. Ambient humidity should sit around 50 to 70 percent, with a daily misting or humid hide as backup.

What Indonesian Blue Tongue Skinks Eat

Indonesian blue tongue skinks are true omnivores. That sets them apart from the more insect focused diet of many geckos. A workable mix leans on lean animal protein, gut loaded insects, and occasional cooked lean meat or egg.

Add chopped vegetables like collard greens, squash, and bell pepper, plus a little fruit. Young, growing skinks need more protein than adults. Adults do better on a more plant heavy plate.

Dust feeder insects with calcium most feedings. Use calcium with vitamin D3 sparingly alongside strong UVB. Fresh water should be available at all times, and the site wide lizard diet guide covers how this compares across other species.

Common Health Issues

Most Indonesian blue tongue skinks enter the trade as wild caught animals. Internal parasites are the most common early health concern. A fecal exam from a reptile veterinarian is worth the cost soon after purchase.

Metabolic bone disease can develop from weak UVB or poor calcium intake. It shows up as soft jaw bones, tremors, or limb deformity. Respiratory infections often trace back to temperatures that run too cool.

Mouth rot, obesity in overfed adults, and shedding trouble round out the issues keepers report most. Any skink that stops eating or shows swollen gums needs a veterinary exam. The lizard health guide covers warning signs across species in more depth.

Behavior and Temperament

Indonesian blue tongue skinks are diurnal, active by day and settled into a hide at night. Their signature defense is the blue tongue flash. When startled, the skink opens wide and shows off a bright blue tongue against a pink mouth.

Most calm down considerably with time and gentle handling. Wild caught individuals tend to start more defensive than captive bred lizards, with more hissing and tail whipping at first. Patience pays off, since blue tongue skinks are among the more food motivated lizard groups once trust builds.

They are also intelligent for a lizard. Many keepers describe them as recognizing routines and individual caretakers over time.

Breeding Notes

Like other members of the genus Tiliqua, this species is ovoviviparous. Females give birth to live young rather than laying eggs. Breeding tends to track wet and dry season cycles rather than a strict cold winter brumation.

Litter sizes in the genus commonly run around ten young, and sometimes more. Young are born fully formed and independent. Captive breeding of Indonesian blue tongue skinks remains far less common than breeding of Australian species.

Australia bans export of its native reptiles, which pushes trade interest toward Indonesian populations instead. This is part of why most animals sold under this name are still wild caught. Anyone considering breeding should confirm sexing and health before pairing any animals.

Lifespan and Adult Size

Indonesian blue tongue skinks typically reach 18 to 24 inches long as adults. Some individuals, especially the evanescens subspecies, grow past 30 inches including tail. Adult weight can approach a kilogram in well fed animals.

The tail is long for a blue tongue skink. It often makes up 60 to 90 percent of the snout to vent body length. That adds noticeably to overall size compared with some Australian relatives.

With steady care, a lifespan of 15 to 20 years is commonly reported. Some individuals are reported to live longer still. This is a long term commitment, not a short lived starter pet.

Subspecies and Color Variation

The trade does not really recognize true bred morphs of this species. The three subspecies act as natural color and pattern forms instead. Tiliqua gigas gigas, often sold as the classic or Halmahera line, tends toward a slimmer tail and solid dark limbs.

Tiliqua gigas keyensis, from the Kei Islands, shows speckling across the whole body and face. Tiliqua gigas evanescens, sometimes labeled Merauke, shows lighter limb speckling and a single stripe at the neck. It also has the longest tail of the three forms.

Locality matters more than any formal morph name here. Sellers do not always label animals accurately, so pattern alone will not confirm subspecies. Compare pattern differences with relatives like the eastern blue tongue skink or the northern blue tongue skink.

What an Indonesian Blue Tongue Skink Costs

Indonesian blue tongue skinks are usually the least expensive blue tongue skinks in the US trade. Wild caught imports keep supply steady and prices lower than captive bred Australian lines. Initial purchase price is often modest next to the setup cost.

A full sized enclosure, UVB fixture, and heating equipment add up quickly. Ongoing costs include feeder insects, produce, supplements, and electricity. Veterinary care matters too, especially the parasite screening a new wild caught skink usually needs.

Budget for a first year veterinary visit beyond routine costs. Parasite treatment in a recently imported animal is common enough to plan for. Anyone still deciding should read the site wide choosing a pet lizard guide before buying, and browse reptile supplies for equipment options.

Frequently Asked Questions

Is an Indonesian blue tongue skink good for beginners?

They can suit a patient beginner who has researched their needs. They are hardy once settled and food motivated. Most are wild caught, though, which means a longer adjustment period than a captive bred lizard.

How big does an indonesia blue tongue skink get?

Most adults reach 18 to 24 inches in total length, including a long tail for the genus. Some individuals, particularly the evanescens subspecies, exceed 30 inches.

Are Indonesian blue tongue skinks captive bred or wild caught?

Most sold in the US trade are wild caught imports rather than captive bred animals. Australia, which produces most captive bred blue tongue skink lines, does not allow export of its native reptiles.

What is the difference between a blue tongue skink indonesian form and an Australian blue tongue skink?

Indonesian forms belong to the species Tiliqua gigas. Most popular Australian pets belong to different species and subspecies in the same genus, such as Tiliqua scincoides. Indonesian animals also tend to be wild caught, while Australian type blue tongue skinks sold in the US are captive bred.

How long do Indonesian blue tongue skinks live?

A lifespan of 15 to 20 years is commonly reported with consistent care. Some individuals live longer still. This makes them a long term commitment rather than a short lived pet.

What does a t gigas blue tongue skink eat?

It eats a mixed omnivorous diet of gut loaded insects, occasional cooked lean meat or egg, and vegetables with a little fruit. Young skinks need more protein than adults. Adults should shift toward a more plant heavy diet over time.