Giant Orange Isopods (Porcellio laevis)

In five years of keeping isopods - and more than two decades keeping reptiles and other exotics before that - the Giant Orange has stayed near the top of my list of species to put in front of a new keeper. It is the bold, bright counterpart to the ever-popular Dairy Cow: the very same species, Porcellio laevis, with the same bulletproof genetics and prolific breeding, but in a single, uniform, vivid orange that stands out dramatically against any substrate. Every Giant Orange we send is captive-bred here in the UK, so you are starting with hardy, settled stock rather than wild-collected animals.

Introduction

The Giant Orange goes by a few names in the hobby - you will see it sold as the Giant Orange Isopod, Orange Laevis or simply P. laevis "Orange" - but they all describe the same animal, the orange colour morph of Porcellio laevis. Laevis is one of the most established and reliable species in the entire hobby, and the Orange morph pairs that proven hardiness with genuinely eye-catching colour. What makes it such a smart choice is exactly that combination: designer-tier orange without the fuss or fragility of a delicate speciality morph, on a species that is famously hard to go wrong with. Its black-and-white sibling, the Dairy Cow, is the same animal in different clothes.

Appearance

These are big, bright and fast. Adults reach up to around 20 mm, which makes them one of the larger isopods you can keep and easily enjoyed with the naked eye. The body is smooth and a true, vibrant orange - not the muted rust or peach tones many "orange" isopods settle for - often with subtle white highlights along the edges, and the intensity varies from one animal to the next, some almost glowing while others run softer. One thing worth knowing: like all Porcellio, Giant Oranges cannot roll into a ball. Unlike the pill-type isopods they rely on speed and cover rather than conglobating, so expect a busy, surface-active colony rather than one that curls up when disturbed.

Care

Porcellio laevis is prized for being adaptable, and the Giant Orange is no exception - it tolerates a wide range of conditions, which is a large part of why it suits beginners. Give it a roomy, well-ventilated enclosure with a deep substrate to burrow into. Build that substrate around a nutritious base of flake soil, white-rotted hardwood and organic topsoil rather than coco coir, which holds moisture but offers nothing for an animal that feeds on its substrate. As a laevis they like it humid but never stagnant, so set up a moisture gradient - a damper end and a drier, well-aired end - and let them choose. Normal UK room temperature suits them across most of the year. Everything you need to build a setup is in our accessories range, and a calcium source such as cuttlebone or crushed limestone should be available at all times for healthy moulting - our calcium guide covers the options.

Diet

Giant Oranges are voracious detritivores, and the foundation of the diet is leaf litter and decaying wood, kept topped up as it is eaten. One thing sets laevis apart, though: they want more protein than the average isopod. Alongside the leaf litter and the occasional vegetable, offer regular protein - a little fish flake, dried shrimp or an insect-based food a couple of times a week - which keeps the colony productive and stops them nibbling at one another. Remove any uneaten fresh food promptly so it does not mould. Our guide to what isopods eat covers the full diet.

Breeding

This is where the Giant Orange earns its keep as a workhorse. Like the Dairy Cow it breeds prolifically and fast: a modest starter group, kept warm and well fed with plenty of protein and calcium, builds into a productive colony in short order. Breeding is sexual, with females carrying their young in a brood pouch on the underside of the body before they emerge as tiny, fully-formed mancae that feed independently from the start. That productivity is exactly what makes them such a good feeder colony as well as a striking display one.

Who is this for?

The Giant Orange is one of the most versatile isopods going. Beginners get an easy, forgiving, affordable first species with results that look far fancier than they are. Reptile and amphibian keepers get a productive feeder colony that doubles as a visible clean-up crew. And experienced hobbyists get a reliable workhorse for bioactive setups where a premium morph would be overkill. About the only keeper it does not suit is someone specifically after a pill-type isopod that rolls into a ball. If you are new to the hobby, our beginner's guide to keeping isopods covers the fundamentals; you will find more of the genus in our Porcellio collection, and if you are building a broader collection our best-selling Rubber Ducky is a natural step into the cave-type Cubaris.

Every colony is captive-bred from established UK stock and ships under our live arrival guarantee, sent in a double-walled box with sphagnum moss in a ventilated deli tub. We dispatch Monday to Thursday so nothing sits in the postal system over a weekend.