{"product_id":"yin-yang-isopods-porcellio-scaber","title":"Porcellio scaber 'Yin Yang' Isopods for Sale UK","description":"\u003cp\u003e\u003cem\u003ePorcellio scaber\u003c\/em\u003e 'Yin Yang' is a beautifully high-contrast morph of the famous common rough woodlouse — same easy, hardy, beginner-friendly species you'd find under any UK garden log, here in a striking black-and-white mottled colour form. The name describes the look perfectly: bold patches of dark grey-black and clean white scattered across the body in a varied, pied pattern that evokes the yin-yang symbol. Each individual carries its own distribution of light and dark, so a colony shows real variety and visual interest — and the contrast is sharp enough to make them properly eye-catching in a naturalistic setup.\u003c\/p\u003e\n\u003cp\u003eWhat makes the Yin Yang particularly worth keeping is exactly that combination: a genuinely distinctive black-and-white look with the famously easy, forgiving care of \u003cem\u003ePorcellio scaber\u003c\/em\u003e — one of the hardiest, most beginner-friendly isopods in the hobby. They're also one of the more affordable colourful morphs, making them an ideal first patterned Porcellio. They sit naturally alongside your standard \u003ca href=\"\/products\/porcellio-scaber-mix-isopods\"\u003eP. scaber Mix\u003c\/a\u003e (same species, wild-type colour mix), and join the catalogue's easy starter cluster with other beginner-friendly options like the \u003ca href=\"\/products\/dairy\"\u003eDairy Cow (P. laevis)\u003c\/a\u003e and \u003ca href=\"\/products\/snow-white\"\u003eSnow White (P. laevis)\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePorcellio scaber\u003c\/em\u003e is the European common rough woodlouse — naturalised across Britain and much of the world, and the species you've probably turned over a log to find in any UK garden. That natural toughness translates to an isopod that's adaptable, forgiving, and quick to establish. Like all \u003cem\u003ePorcellio\u003c\/em\u003e, they cannot conglobate (roll into a ball) — they're flat-bodied, relying on speed and crevices for defence.\u003c\/p\u003e\n\u003ch2\u003eQuick Care Summary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003ePorcellio scaber\u003c\/em\u003e 'Yin Yang'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Names:\u003c\/strong\u003e Yin Yang, Ying Yang, Common Rough Woodlouse 'Yin Yang'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Porcellionidae\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Europe (naturalised worldwide); the 'Yin Yang' morph is captive-bred\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e Up to 17 mm — medium Porcellio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e Approximately 2 years under good conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Easy — among the hardiest and most beginner-friendly isopods\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 18–26°C (room temperature; tolerates cooler too)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e Moderate (60–75%) with a moisture gradient — adaptable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVentilation:\u003c\/strong\u003e Medium — good airflow important\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConglobation:\u003c\/strong\u003e No — flat-bodied Porcellio; cannot roll into a ball\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBehaviour:\u003c\/strong\u003e Active, mostly nocturnal but visible in dim conditions; peaceful\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreeding:\u003c\/strong\u003e Easy and prolific — quick to establish a self-sustaining colony\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRarity:\u003c\/strong\u003e Common — accessible and well-suited to first-time keepers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat Makes Yin Yang Isopods Special\u003c\/h2\u003e\n\u003cp\u003eSeveral factors make the Yin Yang a quietly stunning Porcellio:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe high-contrast black-and-white look.\u003c\/strong\u003e This is the headline — bold patches of dark grey-black and clean white scattered across the body in a varied, pied pattern. Each individual carries its own distribution of light and dark, so a colony shows real variety. It's a properly striking morph of an otherwise plain wild species.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe same famously easy \u003cem\u003eP. scaber\u003c\/em\u003e care.\u003c\/strong\u003e Despite the distinctive colouration, they share all the famously beginner-friendly husbandry of the species — hardy, forgiving, adaptable, and accessible. A distinctive morph with no increase in difficulty is an unusual and welcome combination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGenuinely beginner-friendly.\u003c\/strong\u003e If this is your first Porcellio (or your first isopod), the Yin Yang is among the very best starter species. They're tolerant of a wide range of conditions, quick to settle, and forgiving of minor husbandry slips while you find your feet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eActive and visible.\u003c\/strong\u003e They're active scavengers, especially in dim conditions and at night — so you'll see plenty of them, which makes them genuinely engaging to watch rather than constantly hidden.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProlific and easy to breed.\u003c\/strong\u003e They establish quickly and reproduce readily — satisfying for keepers who enjoy watching colony growth, and dependable as a bioactive cleanup crew.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAn effective bioactive cleanup species.\u003c\/strong\u003e Beyond their looks, they're efficient detritivores — processing decaying leaf litter and supporting a healthy bioactive setup. Useful as well as attractive.\u003c\/p\u003e\n\u003ch2\u003eHow Yin Yang Compares to Other Easy Porcellio\u003c\/h2\u003e\n\u003cp\u003eIf you're choosing between accessible Porcellio, here's how the Yin Yang fits in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/porcellio-scaber-mix-isopods\"\u003eP. scaber Mix\u003c\/a\u003e:\u003c\/strong\u003e Same species, different colour — the Mix is the wild-type mix of colour variants; the Yin Yang is the selected black-and-white mottled morph. Identical easy care — choose by preference, or keep both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/dairy\"\u003eDairy Cow (P. laevis)\u003c\/a\u003e:\u003c\/strong\u003e Both are easy, beginner-friendly Porcellio with bold black-and-white looks. Dairy Cows are larger, smooth, prolific, and prefer moister conditions; Yin Yang are smaller, rough-textured, and moderate-humidity. Both excellent starter species — different scale and care.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs \u003ca href=\"\/products\/snow-white\"\u003eSnow White (P. laevis)\u003c\/a\u003e:\u003c\/strong\u003e Both are easy, hardy Porcellio with white colouration in the mix. Snow Whites are pure white *P. laevis*; Yin Yang are pied black-and-white *P. scaber*. Different species, different looks within the easy-Porcellio range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse the full \u003ca href=\"\/collections\/porcellio-isopods\"\u003ePorcellio collection\u003c\/a\u003e to compare all species and morphs.\u003c\/p\u003e\n\u003ch2\u003eSetting Up the Enclosure\u003c\/h2\u003e\n\u003cp\u003eA 6–10 litre plastic container or terrarium suits a starter colony, with room to grow as the colony establishes. Plastic tubs with clip-lock lids hold appropriate humidity while allowing the ventilation Porcellio need. The \u003ca href=\"\/products\/3l-braplast-plastic-tub\"\u003e3L Braplast tub\u003c\/a\u003e works for smaller starter colonies, with larger housing as the prolific population grows.\u003c\/p\u003e\n\u003cp\u003eFor ventilation, drill holes on opposite sides of the container for cross-ventilation. Medium ventilation suits them — enough airflow to prevent stagnation while maintaining the moist zone of a gradient. Provide plenty of hiding spots with cork bark, leaf litter, and decaying wood for the cover they favour. Keep the enclosure out of direct sunlight. Browse our \u003ca href=\"\/collections\/accessories\"\u003eaccessories collection\u003c\/a\u003e for appropriate enclosures, vents, and other essentials.\u003c\/p\u003e\n\u003ch2\u003eSubstrate\u003c\/h2\u003e\n\u003cp\u003eBuild a straightforward substrate appropriate for this hardy European species:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOrganic topsoil base (pesticide-free) as the foundation\u003c\/li\u003e\n\u003cli\u003eSphagnum peat moss mixed throughout for moisture retention\u003c\/li\u003e\n\u003cli\u003eCrushed limestone, oyster shell, or eggshells distributed throughout for calcium\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/flake-soil-1l\"\u003eFlake soil\u003c\/a\u003e mixed in for added nutrition\u003c\/li\u003e\n\u003cli\u003eDecaying hardwood pieces and rotting wood incorporated throughout\u003c\/li\u003e\n\u003cli\u003eA little forest moss for humidity and grazing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe recommend a topsoil and sphagnum-based mix rather than coco coir. \u003cstrong\u003eSubstrate depth: 5–8 cm\u003c\/strong\u003e for burrowing and security.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTop layer:\u003c\/strong\u003e Generous hardwood leaf litter — \u003ca href=\"\/products\/large-magnolia-leaves-for-isopods\"\u003emagnolia leaves\u003c\/a\u003e and oak leaves work particularly well for long-lasting cover and food. Add cork bark and decaying wood for hides, plus a sphagnum moss patch on one side to create the moist zone of the gradient.\u003c\/p\u003e\n\u003ch2\u003eHumidity and Temperature\u003c\/h2\u003e\n\u003cp\u003eMaintain moderate humidity (around 60–75%) with a moisture gradient. \u003cem\u003ePorcellio scaber\u003c\/em\u003e is one of the more adaptable isopods and tolerates a notably wide range, but they still do best with a gradient — keep one side moist with sphagnum moss and damp leaf litter, while the rest stays drier with leaf litter and bark cover. Good airflow prevents stagnation.\u003c\/p\u003e\n\u003cp\u003eAs one PostPods customer noted about following the website's care guidance, getting moisture right is the key to keeping isopods successfully — too much moisture is the most common, avoidable mistake. Even with this forgiving species, aim for moderate humidity with a damp retreat rather than a uniformly soaking enclosure. The Yin Yang is tolerant, but a gradient beats waterlogging.\u003c\/p\u003e\n\u003cp\u003eTemperature should be 18–26°C — UK room temperature works year-round in most homes. As a temperate European species they're comfortable across a wide range and tolerate cooler conditions too, which makes them genuinely easy to keep in UK homes without supplemental heating. Avoid sustained extremes.\u003c\/p\u003e\n\u003ch2\u003eDiet\u003c\/h2\u003e\n\u003cp\u003eYin Yang isopods are unfussy detritivores with broad appetites:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary diet (always available):\u003c\/strong\u003e Hardwood leaf litter (oak, beech), decaying rotting wood, dried plant matter, lichen, mosses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetables (1–2x weekly):\u003c\/strong\u003e Carrot, courgette, sweet potato, leafy greens, squash. Replace within 24–48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit (occasionally):\u003c\/strong\u003e Small amounts of soft fruit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein (1–2x weekly):\u003c\/strong\u003e Fish flakes, dried daphnia, freeze-dried shrimp. Supports growth and reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium (essential — always available):\u003c\/strong\u003e Cuttlefish bone, crushed limestone, oyster shell, eggshells. Essential for healthy moulting — provide multiple sources distributed throughout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFeeding approach:\u003c\/strong\u003e Maintain a base of leaf litter and decaying wood, supplementing with vegetables, occasional fruit, regular protein, and a constant calcium source. Browse our \u003ca href=\"\/collections\/accessories\"\u003eaccessories collection\u003c\/a\u003e for the full range of protein supplements. Remove uneaten fresh foods within 24–48 hours to prevent mould.\u003c\/p\u003e\n\u003ch2\u003eBreeding\u003c\/h2\u003e\n\u003cp\u003eYin Yang isopods are easy, prolific breeders — quick to establish a self-sustaining colony under stable conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBreeding basics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFemales carry developing young in a marsupium and release fully-formed live juveniles\u003c\/li\u003e\n\u003cli\u003eJuveniles grow quickly and reach maturity in just a few months\u003c\/li\u003e\n\u003cli\u003eAdults can live up to two years under favourable conditions\u003c\/li\u003e\n\u003cli\u003eThe black-and-white mottled colouration develops as juveniles mature\u003c\/li\u003e\n\u003cli\u003eA pure colony breeds the morph reliably, with each individual showing its own pattern\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFor breeding success:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStable temperatures within range (20–24°C is ideal)\u003c\/li\u003e\n\u003cli\u003eA proper moisture gradient (moderate humidity with a damp side)\u003c\/li\u003e\n\u003cli\u003eAdequate calcium for breeding females\u003c\/li\u003e\n\u003cli\u003eRegular protein supplementation\u003c\/li\u003e\n\u003cli\u003ePlenty of cork bark and leaf-litter hides\u003c\/li\u003e\n\u003cli\u003eA larger starter group establishes faster and provides genetic diversity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAs an easy, prolific breeder, the Yin Yang rewards keepers with quick, steady colony growth — and a settled colony of pied black-and-white scavengers makes a genuinely engaging display.\u003c\/p\u003e\n\u003ch2\u003ePair With Springtails\u003c\/h2\u003e\n\u003cp\u003eAdd a thriving \u003ca href=\"\/collections\/springtails-for-sale\"\u003espringtail culture\u003c\/a\u003e to any Yin Yang setup. Springtails handle mould and microbial growth at a scale isopods can't manage — particularly useful around protein foods and in the moist zone of the moisture gradient. They coexist peacefully with the Yin Yang and form a helpful cleanup partnership.\u003c\/p\u003e\n\u003ch2\u003eWho Should Buy Yin Yang Isopods?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBeginners wanting an easy, hardy, distinctive first isopod\u003c\/li\u003e\n\u003cli\u003eKeepers drawn to bold black-and-white colouration\u003c\/li\u003e\n\u003cli\u003eAnyone wanting a colourful Porcellio at an accessible price point\u003c\/li\u003e\n\u003cli\u003eBioactive setup builders wanting a hardy, prolific cleanup crew\u003c\/li\u003e\n\u003cli\u003eCollectors of \u003cem\u003eP. scaber\u003c\/em\u003e colour morphs\u003c\/li\u003e\n\u003cli\u003eUK cooler-home keepers (they tolerate temperate conditions well)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot ideal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavily-planted bioactive setups where plant-nibbling is a concern (Porcellio enjoy plants)\u003c\/li\u003e\n\u003cli\u003eHigh-humidity tropical-only setups (they prefer a moderate gradient)\u003c\/li\u003e\n\u003cli\u003eKeepers who tend to overwater (they prefer moderate humidity with drier zones)\u003c\/li\u003e\n\u003cli\u003eThose wanting conglobating ball-rolling species (Porcellio cannot roll)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRealistic Expectations\u003c\/h2\u003e\n\u003cp\u003eIt's a colourful version of a familiar species. The appeal is the bold black-and-white pattern on the easy, well-known \u003cem\u003eP. scaber\u003c\/em\u003e; this isn't an exotic rarity, it's an accessible distinctive morph of a genuinely beginner-friendly species.\u003c\/p\u003e\n\u003cp\u003eColour and pattern vary between individuals. Each Yin Yang shows its own distribution of light and dark patches — natural variation is part of the morph's charm. Pattern develops and stabilises as juveniles mature.\u003c\/p\u003e\n\u003cp\u003eThey're genuinely easy. As a \u003cem\u003eP. scaber\u003c\/em\u003e morph, the Yin Yang is among the hardiest, most forgiving isopods — tolerant of a wide range of conditions and forgiving of minor husbandry mistakes. An ideal first Porcellio.\u003c\/p\u003e\n\u003cp\u003eThey can't roll into a ball. Unlike Armadillidium, the Yin Yang is a flat-bodied Porcellio relying on speed, hide-wedging, and crevices for defence. If you're expecting pillbug ball-rolling, this isn't that kind of isopod — but they're active and engaging in their own right.\u003c\/p\u003e\n\u003cp\u003eThey want moderate humidity, not a swamp. Despite being a damp-loving European species, they do best with a moisture gradient and good ventilation rather than uniformly soaking conditions.\u003c\/p\u003e\n\u003cp\u003eThey may nibble live plants. Like all \u003cem\u003ePorcellio\u003c\/em\u003e, they enjoy live plants in bioactive vivariums — bear that in mind in a heavily-planted setup.\u003c\/p\u003e\n\u003ch2\u003eBuilding Your Setup\u003c\/h2\u003e\n\u003cp\u003eA complete Yin Yang setup needs basic substrate components, abundant calcium-rich materials, generous leaf litter and bark, and protein supplements. Browse our \u003ca href=\"\/collections\/accessories\"\u003eaccessories collection\u003c\/a\u003e for everything you need — enclosures, ventilation, leaf litter, calcium (cuttlebone, limestone, oyster shell), and protein supplements.\u003c\/p\u003e\n\u003cp\u003eBrowse the full \u003ca href=\"\/collections\/porcellio-isopods\"\u003ePorcellio collection\u003c\/a\u003e for more species and morphs, including the standard \u003ca href=\"\/products\/porcellio-scaber-mix-isopods\"\u003eP. scaber Mix\u003c\/a\u003e and other beginner-friendly options.\u003c\/p\u003e","brand":"PostPods","offers":[{"title":"10","offer_id":55284118913406,"sku":null,"price":12.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":55284118946174,"sku":null,"price":50.0,"currency_code":"GBP","in_stock":true},{"title":"20","offer_id":55284118978942,"sku":null,"price":22.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/0707\/2294\/files\/ying-yang-isopods-porcellio-scaber-9137284.jpg?v=1779556631","url":"https:\/\/postpods.co.uk\/products\/yin-yang-isopods-porcellio-scaber","provider":"Isopods For Sale UK | PostPods","version":"1.0","type":"link"}