Cubaris Isopods UK

Cubaris are among the most sought-after isopods in the hobby - small, strikingly patterned tropical woodlice from the limestone forests and caves of Southeast Asia. They're prized as display animals (think Rubber Ducky, Panda King and Lemon Blue), generally slower-breeding and longer-lived than other isopods, and they need warm, humid, well-ventilated setups with a steady calcium source. This guide is an overview of the genus for UK keepers: what Cubaris are, the popular types, and the care they share.

For a deeper, step-by-step care walkthrough, see our complete Cubaris care guide, and you can browse what's currently in stock in our Cubaris collection.

What Are Cubaris Isopods?

Cubaris is a genus of woodlice (suborder Oniscidea, family Armadillidae) - terrestrial crustaceans, not insects - that roll into a ball when threatened, much like the familiar garden pill bug. Most hobby Cubaris are tropical species from Thailand, Vietnam, Malaysia and nearby regions, where many live in and around limestone caves. They tend to be small, slow-moving, nocturnal and shy, and as a group they breed more slowly and live longer than most other isopods, which is part of why the rarer types command high prices.

It's worth knowing that "Cubaris" is something of a trade catch-all. The genus is genuinely large and taxonomically messy, and many isopods sold as "Cubaris sp." are probably not true Cubaris at all - they're simply traded under that name with a descriptive label until the science catches up (which is why you'll see names like Cubaris sp. "Rubber Ducky"). The type species is Cubaris murina, and new varieties keep appearing faster than they can be formally classified. For keeping purposes, the good news is that most of these tropical "Cubaris" share broadly similar care.

Popular Cubaris Isopods in the UK

A few types have become hobby favourites:

Rubber Ducky - the celebrity of the genus, named for the yellow "duck face" markings on a dark body. Striking and much-wanted, but slow-breeding and pricier as a result. See our Rubber Ducky care guide.
Panda King - bold black-and-white panda-style markings on a small body. Often considered one of the more beginner-friendly Cubaris, breeding at a reliable, moderate pace once established.
Lemon Blue - a newer, highly sought-after type with a pale powder-blue body edged in lemon-yellow. Beautiful and still relatively scarce, so it carries a higher price tag. See our Lemon Blue care guide.
Amber Ducky - a warm gold-toned relative of the Rubber Ducky, and one of the easier Cubaris to start with.

There are many more - including a whole run of coffee-themed morphs (Cappuccino, Latte, Cappu Cream) - and new ones arrive regularly. Our guide to the different types of Cubaris covers the range in more detail. If you're new to the genus, starting with a hardier, less costly type like Panda King or Amber Ducky is a sensible way to learn before moving on to the rarer varieties.

How Do You Care for Cubaris Isopods?

Most tropical Cubaris share the same care needs, and getting the environment stable is the whole game. The essentials:

Enclosure. A ventilated tub or glass enclosure with a secure lid, sized to the colony with room to grow. Good airflow is essential - stagnant, stuffy air is a common cause of problems.
Substrate. A deep, moisture-retaining mix of coconut fibre or topsoil, sphagnum moss, leaf litter and decaying hardwood, ideally deep enough to burrow into. Given their limestone origins, many keepers add limestone or crushed shell.
Temperature. Warm - around 21-27°C, a little above typical UK room temperature - so gentle background heat (a low-wattage mat on a thermostat) is often useful in a cool home, rather than a drying heat lamp.
Humidity. High but not waterlogged. Aim for a moisture gradient: keep part of the enclosure damp and let the rest stay slightly drier, so the isopods can choose. Moist, not wet, is the rule - over-wet, poorly-ventilated setups are the main cause of Cubaris die-offs.
Hides. Plenty of cork bark and dark, secure spaces, since Cubaris are shy and like to stay hidden.

For substrate specifics and recipes, our isopod substrate guide goes further.

What Do Cubaris Isopods Eat?

Like all isopods, Cubaris are detritivores, not omnivores - their diet is built on decaying plant matter rather than meat. The staple is leaf litter and soft white rotten wood, which should always be available. Around that, offer small amounts of vegetables (carrot, squash, cucumber - pigment-rich choices can help maintain colour), a little protein a couple of times a week (fish flake or dried shrimp), and a permanent calcium source such as cuttlebone or limestone. Calcium matters especially for Cubaris, given their limestone-rich native habitats and their need for healthy moulting. Remove uneaten fresh food before it moulds.

Are Cubaris Isopods Hard to Keep?

They're rated moderate rather than beginner. Nothing about their care is complicated in isolation - warmth, humidity balance, ventilation and the right food - but Cubaris are less forgiving than hardy species and recover slowly because they breed slowly. The keepers who succeed get the enclosure stable and then leave it alone. If Cubaris would be your first isopods, an easier type (Panda King, Amber Ducky) or a hardier genus altogether is a gentler starting point; if you've kept isopods before and want a standout display colony, Cubaris are a rewarding step up.

Frequently Asked Questions

What are Cubaris isopods?

Small, often brightly patterned tropical woodlice from the limestone regions of Southeast Asia, kept as display isopods. "Cubaris" is a hobby catch-all genus name, and many traded as "Cubaris sp." may belong to other genera awaiting classification.

Are Cubaris isopods good for beginners?

They're a moderate-difficulty group rather than a beginner one - they need stable warmth and humidity and breed slowly, so they're less forgiving of mistakes. Easier types like Panda King or Amber Ducky are the best place to start within the genus.

What temperature and humidity do Cubaris need?

Around 21-27°C and high humidity kept as a gradient (part damp, part slightly drier) with good ventilation. Moist but not wet is the key - over-wet, stagnant setups are the main cause of losses.

Why are some Cubaris so expensive?

They're slow-breeding and long-lived for isopods, so supply of the rarer, more striking types builds gradually while demand stays high. Common types like Panda King are far more affordable.

What do Cubaris isopods eat?

They're detritivores: leaf litter and rotting wood as the staple, plus small amounts of vegetables, occasional protein, and a permanent calcium source like cuttlebone or limestone.