Shiny Gator Isopod Care: Size, Humidity, Diet

The Shiny Gator is an undescribed dwarf woodlouse sold as Isopoda sp. and traded as Thai: a small isopod with a dark, ridged shell set with rows of raised nubs, like a strip of miniature alligator hide. In the photographs on our listing the head is edged in orange, and a few show the same colour at the tail. Keep it warm and steady at the 22 to 26°C on our listing's care panel, humid with one damp end, in a small tub with fine mesh over the vents, on a living substrate with leaf litter, rotted wood and calcium, and give a new group time to settle.

What a Shiny Gator Is

A trade name for an animal with no formal description that we could find. Most sellers list it as Isopoda sp., which names only the order that every woodlouse belongs to. A few file it under Cubaris, and one hobby reference site lists it as an undetermined genus in the family Armadillidae. None of them gives a reason. Cubaris is itself a genus within Armadillidae, and in the hobby it has become a catch-all for undescribed rolling species, as our guide to Cubaris explains, so the label tells you little about what the animal is.

Every seller we read that gives an origin says Thailand, apart from one that says South-East Asia, and none names a locality, so the care panel on our listing reads "Thailand (trade report)". The Gator part of the name presumably comes from the texture: sellers compare the nubbed shell to alligator skin. The earliest dated mention we found is a hobby forum list from February 2022 that filed it under Cubaris, among species the poster thought were not yet widespread in the hobby.

Shiny Gator, Fancy Gator or Dwarf Gator?

Three other names sound close. The Fancy Gator and the Ancient Gator are also sold as Thai Isopoda sp., and sellers list them as separate animals from the Shiny Gator. We found no published way to tell the three apart, so keep each in its own tub. The Dwarf Gator is less clear-cut. Several North American sellers use that name, along with Borneo Gator, for Reductoniscus tuberculatus, a described species from Borneo that we sell as the Ankylosaur, but at least one American seller also calls its Thai gators dwarf gator species. If a name is all you have to go on, ask for the scientific name.

The Thai Spiky, another undescribed Thai animal, sold as Isopoda sp. 'Thai Spike', has its own Thai Spiky care guide, and our piece on spiky isopods sets the Shiny Gator beside the other textured species in the hobby.

What It Looks Like and How Big It Gets

The shell is ridged across every segment, and each ridge carries a row of raised nubs. Sellers describe the colour as dark throughout, with a glossy, armoured look. In the photographs on our listing it runs from slate to lilac grey depending on the light, with orange at the front of the head and, on a few, at the tail. The eyes are large and dark.

A Shiny Gator isopod on a pale, rough surface, its dark ridged shell set with raised nubs and its face edged in orange

The 4 to 6 mm on our care panel is a keeper's figure, not a measurement. Two UK sellers give about 6 mm and one hobby reference site 8 mm, while one American seller gives 3.8 mm, the same figure it gives for two other gators. We found no published measurement, which is what you would expect for an animal without a description. Whichever is nearer the truth, it is a dwarf, and the young are small enough to walk out through an open vent.

How It Behaves

It rolls up when disturbed, as sellers say, and the photograph below shows a few partly rolled. Accounts of how much you will see of it differ: one seller finds the animals bold and free-moving, while another says they come out mostly at night and spend the day under bark. Expect a new group to keep its head down at first.

Several Shiny Gator isopods on pale bark, a few of them partly rolled up, their ridged grey-brown shells marked with orange at the head and tail

Warmth

Our care panel gives 22 to 26°C. The sellers who publish a range all stop at 26°C, while their lower figures run from 18 to 22°C, so the top of the band is agreed and the bottom is not. Aim for a steady temperature inside the band rather than the top of it. An English home averages about 19°C through the heating season, below the bottom of the panel, so plan on a heat mat or heat cable on a thermostat, fixed to the side of the tub, never underneath, through the colder months at least. I run heat cable along my racking, which is the cheaper way to warm a lot of tubs at once.

Humidity and Air

We found no scientific source for a humidity figure. The one seller we found who publishes a number says 70 to 80 per cent with a drier corner, and the rest describe the tub as medium-high, high or fairly moist. Our care panel gives 60 to 80 per cent and, like every humidity range on our panels, describes the whole tub: the damp end near 80, the top of that seller's range, and the drier end nearer 60. Keep one end damp, with sphagnum moss to hold the water there, and let the rest sit a little drier without ever drying out.

Sellers' advice on air ranges from strong ventilation to none at all. Take the middle road: a few small vents on opposite sides of the tub, with fine mesh over them, so the damp end stays fresh and the young stay in. Never seal the box.

Tub, Substrate and Calcium

Start a new group in a small tub, which holds its humidity better, and an animal this size is far easier to find and check in a few litres than in a large enclosure; move the colony up as it grows. Our guide to how big a tub isopods need has the sizes.

Lean towards a finer substrate, at least 5 cm deep: flake soil, crumbled white-rotted hardwood and organic topsoil, with crushed limestone or oyster shell mixed through and a piece of cuttlebone on top. Woodlice build their shells from calcium carbonate, and a breeding group gets through a lot of it. Leave coir out of the mix, because it holds water and feeds nothing to an animal that eats its floor. Over the top goes a layer of leaf litter, then pieces of extra-small cork bark laid overlapping, for cover the animals can get right under.

Feeding

Leaf litter and white-rotted wood are the diet, so keep both topped up. Sellers add vegetables such as carrot, squash, sweet potato and mango, and a little protein such as fish flake or dried shrimp. Give vegetables in small amounts once or twice a week and protein now and then, and clear fresh food that has sat for a day or two before it moulds. A culture of tropical white springtails sharing the tub grazes soft mould; it is a help, not a cure.

Breeding

We found no published brood size or time to maturity for the Shiny Gator. Sellers call its breeding moderate or slower than the beginner species, one calls it prolific, and one keeper's group grew slowly and had produced no young after about a year, which the keeper put down to a group of one sex. Most woodlice need both sexes to breed, and we found nothing to suggest this one differs, so a group of one sex may never breed, however good the tub. That is the best argument for starting with as many as you can. I start new colonies with 20 or more; if you cannot get 20, buy no fewer than 10.

The young are tiny when they leave the brood pouch, so search the tub gently and as little as possible. Hold the heat, the damp end and the calcium steady, and judge the colony after a season rather than a month.

Is It a Beginner Isopod?

Ratings run from beginner to high difficulty, depending on the seller, and our care panel says Medium. Nothing in its care is unusual, but it is small, slow to build and hard to replace, so it makes a better second or third species than a first.

Frequently Asked Questions

What is a Shiny Gator isopod?

An undescribed dwarf woodlouse sold as Isopoda sp. and traded as Thai, with a nubbed shell that looks like miniature alligator skin.

What is the scientific name of the Shiny Gator isopod?

We found no formal description of it, so it has no scientific name that we know of. Most sellers list it as Isopoda sp., a few as Cubaris sp., and one reference site as an undetermined genus in the family Armadillidae.

How big do Shiny Gator isopods get?

Our care panel gives 4 to 6 mm, a keeper's figure. Two UK sellers give about 6 mm, one American seller 3.8 mm and one reference site 8 mm; we found no published measurement.

What humidity do Shiny Gator isopods need?

Humid, with one damp end. Our care panel gives 60 to 80 per cent across the tub: the damp end near 80, the top of the only seller's figure we found, and the drier end nearer 60.

Is a Shiny Gator the same as a Dwarf Gator?

Usually not. Several North American sellers use Dwarf Gator for Reductoniscus tuberculatus, which we sell as the Ankylosaur, though at least one also calls its Thai gators dwarf gators, so check the scientific name. The Fancy Gator and the Ancient Gator are sold as separate animals too.