{"product_id":"unicorn-snails-subulina-octona","title":"Unicorn Snails (Subulina Octona)","description":"\u003cp\u003eTiny tropical land snails with elongated, spiralled shells that taper to a fine point — hence the \"Unicorn\" name. \u003cem\u003eSubulina octona\u003c\/em\u003e is a small, active, highly social species that's ideal for nano enclosures, terrariums, bioactive setups, and as companions in tropical isopod displays. They're hardy, easy to care for, and one of the most engaging miniature snails available in the hobby.\u003c\/p\u003e\n\u003cp\u003eAvailable individually, in groups of 5, or in groups of 10. Often known by alternative names: Awl Snail, Miniature Awl Snail, or Brazilian Trumpet Snail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eA Glimpse\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003eSubulina octona\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Names:\u003c\/strong\u003e Unicorn Snail, Awl Snail, Miniature Awl Snail, Brazilian Trumpet Snail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Subulinidae\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Native to tropical Americas; now widely distributed globally (Caribbean, Africa, Asia, Australia, Pacific Islands, and as a \"hothouse alien\" in Britain and Czech Republic)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e 1.5–3 cm shell length (most stay around 2 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e 2.5–4 years under good conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Easy — genuinely beginner-friendly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 20–26°C (24–27°C optimal for activity and breeding)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 80% or higher — these are tropical snails\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBehaviour:\u003c\/strong\u003e Social, nocturnal, often hidden during the day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReproduction:\u003c\/strong\u003e Hermaphroditic, capable of self-fertilisation, prolific breeder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy \"Unicorn\"?\u003c\/h2\u003e\n\u003cp\u003eThe name comes from the shell shape. Unlike the rounded, dome-shaped shells of most familiar land snails (think garden snails or \u003ca href=\"\/products\/rodatzi-giant-african-land-snails\"\u003eGiant African Land Snails\u003c\/a\u003e), Unicorn Snails have a long, narrow, tapered shell that ends in a sharp point — like a tiny unicorn horn. The shell typically has 8–9 whorls and is glossy, semi-translucent, and yellowish-brown in colour. Through the shell you can often see the snail's body, and in adults you can sometimes see eggs developing inside.\u003c\/p\u003e\n\u003cp\u003eThe body is pale yellow and surprisingly long when extended — Unicorn Snails can stretch their body almost as long as their shell, which makes them entertaining to watch as they explore enclosures. They're inquisitive and active in a way that bigger snails often aren't, and they don't have the slow, ponderous movement of larger species.\u003c\/p\u003e\n\u003ch2\u003eWhy Keep Unicorn Snails?\u003c\/h2\u003e\n\u003cp\u003eSeveral reasons make these one of the most useful and rewarding tiny invertebrates in the hobby:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBioactive cleanup.\u003c\/strong\u003e Unicorn Snails are detritivores — they consume decaying plant material, lichens, fungi, fallen leaves, and biofilms. In a planted terrarium or bioactive enclosure, they help process organic waste before it accumulates. They work alongside \u003ca href=\"\/collections\/springtails-for-sale\"\u003espringtails\u003c\/a\u003e and isopods to keep substrate clean.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTropical isopod companions.\u003c\/strong\u003e Unicorn Snails coexist beautifully with tropical isopod species in mixed enclosures. They share the same warmth and humidity preferences as \u003ca href=\"\/collections\/cubaris-isopods\"\u003eCubaris\u003c\/a\u003e and \u003ca href=\"\/collections\/ardentiella-isopods\"\u003eArdentiella\u003c\/a\u003e species — 20–26°C and high humidity. They're too small to compete with isopods for resources and don't disturb breeding colonies. Many keepers add them to Cubaris display enclosures specifically because they're active during different hours (nocturnal) and add visible movement when the isopods are hidden.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNano enclosures.\u003c\/strong\u003e Their tiny size (around 2 cm fully grown) means they thrive in small enclosures that wouldn't suit anything else. A 4-litre tub can comfortably house 10 or more Unicorn Snails. This makes them perfect for desk-top displays, classroom setups, or anyone with limited space.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTerrarium displays.\u003c\/strong\u003e In planted terrariums, the unicorn-horn shell shape stands out against natural backgrounds. They're constantly active in damp, planted environments and add visible life at the small scale.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy care for first-time invertebrate keepers.\u003c\/strong\u003e Unicorn Snails are forgiving of minor husbandry mistakes. They tolerate temperature variations, recover well from short humidity dips, and don't require specialist food. For someone new to invertebrate keeping, they're an excellent starter species.\u003c\/p\u003e\n\u003ch2\u003eEnclosure\u003c\/h2\u003e\n\u003cp\u003eA small plastic tub or glass terrarium works well. Cross-ventilation is important — drill or include vents on opposite sides of the enclosure to maintain airflow without dropping humidity too much. Unicorn Snails do well in setups that other tropical inverts use, so existing tropical isopod enclosures can host them without modification.\u003c\/p\u003e\n\u003cp\u003eSubstrate should be 3–5 cm of organic topsoil, peat-based soil, or a mix. Avoid stones, gravel, or sharp materials that could damage the delicate shell. \u003ca href=\"\/products\/flake-soil-1l\"\u003eFlake soil\u003c\/a\u003e mixed in adds nutrition and texture they enjoy.\u003c\/p\u003e\n\u003cp\u003eProvide leaf litter generously — \u003ca href=\"\/products\/large-magnolia-leaves-for-isopods\"\u003emagnolia leaves\u003c\/a\u003e, \u003ca href=\"\/products\/bamboo-leaf-litter\"\u003ebamboo leaves\u003c\/a\u003e, and other dried hardwood leaves all work. Unicorn Snails will graze on the leaves themselves and on the biofilms that develop on them.\u003c\/p\u003e\n\u003cp\u003eAdd hides — small pieces of cork bark, moss patches, and pieces of wood. Snails like to bury or tuck themselves away during the day, so multiple hide options reduce stress.\u003c\/p\u003e\n\u003ch2\u003eTemperature and Humidity\u003c\/h2\u003e\n\u003cp\u003e20–26°C is the comfort range, with 24–27°C optimal for activity and reproduction. Most UK homes will sit within the lower end of this range at room temperature; supplementary heat (a small heat mat on a thermostat) extends the comfort range during winter and encourages breeding.\u003c\/p\u003e\n\u003cp\u003eHumidity should be 80% or higher. Mist daily to maintain damp substrate. Unicorn Snails breathe through a lung-like cavity that requires high atmospheric moisture — a dry enclosure causes rapid health decline. The substrate should always feel damp to the touch.\u003c\/p\u003e\n\u003ch2\u003eDiet\u003c\/h2\u003e\n\u003cp\u003eUnicorn Snails are herbivores and detritivores with broad appetites:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh vegetables:\u003c\/strong\u003e Cucumber, courgette, sweet potato, carrot, lettuce (avoid iceberg), spinach, kale, broccoli\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit (occasionally):\u003c\/strong\u003e Apple, banana, melon, mango — avoid citrus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf litter:\u003c\/strong\u003e The foundation of their diet. Hardwood leaves provide both food and grazing surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiofilms and lichens:\u003c\/strong\u003e Naturally consumed off leaves and wood as the enclosure matures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium:\u003c\/strong\u003e Essential — see below\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTip: Slice fresh vegetables thinly. Unicorn Snails have small mouths and can struggle with thick chunks.\u003c\/p\u003e\n\u003ch2\u003eCalcium\u003c\/h2\u003e\n\u003cp\u003eCalcium is essential for shell health. Around 98% of a snail's shell is calcium carbonate, and without consistent calcium intake, the shell becomes thin and fragile.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cuttlebone-100g\"\u003e\u003cstrong\u003eCuttlebone\u003c\/strong\u003e\u003c\/a\u003e — leave a piece in the enclosure permanently. Snails will rasp on it as needed\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/malawi-light-limestone-for-isopods\"\u003e\u003cstrong\u003eMalawi Limestone\u003c\/strong\u003e\u003c\/a\u003e — passive calcium source plus habitat structure\u003c\/li\u003e\n\u003cli\u003eCrushed eggshell or oyster shell — additional supplementary options\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBreeding — Be Prepared\u003c\/h2\u003e\n\u003cp\u003eUnicorn Snails are extremely prolific. They're hermaphrodites, meaning every individual has both male and female reproductive organs. Two snails will breed readily, and even a single isolated Unicorn Snail can reproduce through self-fertilisation under the right conditions.\u003c\/p\u003e\n\u003cp\u003eEach reproductive event produces 4–5 eggs, but a single snail can have 18–33 reproductive events over its lifetime — totalling around 124 eggs per snail. In a colony, you can quickly end up with hundreds of snails if you don't actively manage the population.\u003c\/p\u003e\n\u003cp\u003eEggs are visible through the parent's translucent shell before being laid into the substrate. If you don't want population growth, eggs need to be removed and frozen (humanely destroying them) before they hatch. This isn't optional in a long-term colony — Unicorn Snails will overrun an enclosure within months if left unchecked.\u003c\/p\u003e\n\u003cp\u003eIf you do want to breed them, no special intervention is needed. Maintain good conditions and offspring will appear automatically.\u003c\/p\u003e\n\u003cp\u003eNote: Like all snails, Unicorn Snails should never be released into the wild in the UK. They're a tropical species that wouldn't naturally survive UK winters, but eggs and small specimens can survive in heated environments (greenhouses, hothouses) and have established populations in the UK as \"hothouse aliens.\"\u003c\/p\u003e\n\u003ch2\u003eTank Mates\u003c\/h2\u003e\n\u003cp\u003eUnicorn Snails work well with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTropical isopods\u003c\/strong\u003e — Cubaris and Ardentiella species share the same conditions and don't disturb the snails. Avoid pairing with aggressive isopod species like large Porcellio that might attack small snails\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/collections\/springtails-for-sale\"\u003eSpringtails\u003c\/a\u003e\u003c\/strong\u003e — perfect bioactive companions, sharing the same humidity preferences\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther Unicorn Snails\u003c\/strong\u003e — they're highly social and thrive in groups. Solo specimens often live shorter lives than those kept communally\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBioactive vivariums\u003c\/strong\u003e — for dart frogs, mourning geckos, and other small humid-loving herpetofauna, Unicorn Snails serve as cleanup crew without being eaten (their shells make them unpalatable to most small predators)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAvoid pairing with: large isopod species that may crush them, predatory invertebrates, or large snails (like \u003ca href=\"\/products\/rodatzi-giant-african-land-snails\"\u003eGiant African Land Snails\u003c\/a\u003e) that could accidentally crush or outcompete them.\u003c\/p\u003e\n\u003ch2\u003ePairs Well With\u003c\/h2\u003e\n\u003cp\u003eBuilding a complete Unicorn Snail or mixed bioactive setup:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/flake-soil-1l\"\u003e\u003cstrong\u003eFlake Soil\u003c\/strong\u003e\u003c\/a\u003e — nutritious substrate component\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/large-magnolia-leaves-for-isopods\"\u003e\u003cstrong\u003eMagnolia Leaves\u003c\/strong\u003e\u003c\/a\u003e — long-lasting leaf litter\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bamboo-leaf-litter\"\u003e\u003cstrong\u003eBamboo Leaf Litter\u003c\/strong\u003e\u003c\/a\u003e — structural leaf cover\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cuttlebone-100g\"\u003e\u003cstrong\u003eCuttlebone\u003c\/strong\u003e\u003c\/a\u003e — essential calcium for shell health\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/malawi-light-limestone-for-isopods\"\u003e\u003cstrong\u003eMalawi Limestone\u003c\/strong\u003e\u003c\/a\u003e — passive calcium source\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/springtails-for-sale\"\u003e\u003cstrong\u003eSpringtails\u003c\/strong\u003e\u003c\/a\u003e — bioactive cleanup companions\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/cubaris-isopods\"\u003e\u003cstrong\u003eCubaris isopods\u003c\/strong\u003e\u003c\/a\u003e — ideal mixed-enclosure companions\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/accessories\"\u003e\u003cstrong\u003eEnclosures \u0026amp; Air Vents\u003c\/strong\u003e\u003c\/a\u003e — properly ventilated housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse the full \u003ca href=\"\/collections\/other-inverts-for-sale\"\u003eOther Invertebrates collection\u003c\/a\u003e for more species, or our \u003ca href=\"\/blogs\/isopods-useful-articles\/setting-up-selecting-your-first-isopods\"\u003esetting up guide\u003c\/a\u003e for a complete enclosure walkthrough.\u003c\/p\u003e","brand":"PostPods","offers":[{"title":"1","offer_id":57337524355454,"sku":null,"price":1.5,"currency_code":"GBP","in_stock":false},{"title":"5","offer_id":57337524388222,"sku":null,"price":5.5,"currency_code":"GBP","in_stock":false},{"title":"10","offer_id":57337524420990,"sku":null,"price":10.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/0707\/2294\/files\/unicorn-snails-subulina-octona-9973879.jpg?v=1777548435","url":"https:\/\/postpods.co.uk\/products\/unicorn-snails-subulina-octona","provider":"Isopods For Sale UK | PostPods","version":"1.0","type":"link"}