{"product_id":"harlequin-rasbora-trigonostigma-heteromorpha","title":"Harlequin Rasbora | Trigonostigma heteromorpha","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThe Harlequin Rasbora is a timeless community classic — a coppery-pink body marked with a bold black triangle that dazzles in a tight, moving shoal. Peaceful, hardy and undemanding, it is one of the best fish for a planted community and reaches a modest 4–5 cm. Few fish give so much colour and movement for so little trouble.\u003c\/p\u003e\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\u003cp\u003eTrigonostigma heteromorpha comes from Malaysia, Singapore, Sumatra and southern Thailand, where it lives in soft, acidic, tannin-stained forest streams and peat swamps shaded by overhanging vegetation. The dark water and gentle flow bring out its warm body colour.\u003c\/p\u003e\u003ch2\u003eAppearance\u003c\/h2\u003e\u003cp\u003eA small, deep-bodied rasbora in warm copper-pink to orange, with a distinctive solid black wedge covering the rear half of the body. Fins carry a hint of red-orange, strongest in mature males, whose black triangle also has a slightly more defined leading edge than the female's.\u003c\/p\u003e\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\u003cp\u003eCompletely peaceful and sociable. Keep a shoal of at least 8–10 for a settled, colourful display; larger groups look wonderful. It suits the classic planted community and mixes well with other gentle fish.\u003c\/p\u003e\u003ch2\u003eFeeding\u003c\/h2\u003e\u003cp\u003eA micro-omnivore with a small mouth. Feed good-quality flake and micro-pellets alongside frozen and live foods such as daphnia, baby brine shrimp and micro-worm. A varied diet keeps the colours warm and rich.\u003c\/p\u003e\u003ch2\u003eCare Requirements\u003c\/h2\u003e\u003cp\u003eAn aquarium of 60 litres or more suits a good-sized shoal. Harlequins are hardy and adaptable but look and breed best in soft to neutral, gently filtered water with planting and some botanicals or tannins. Regular water changes keep them in top condition.\u003c\/p\u003e\u003ch2\u003eBreeding\u003c\/h2\u003e\u003cp\u003eUnusually for a rasbora, it is a plant-spawner: the female deposits eggs on the underside of broad leaves such as cryptocoryne, where they are fertilised and left. Soft, acidic, warm water encourages spawning. Adults will eat the eggs, so a separate, densely planted breeding tank gives the best results.\u003c\/p\u003e\u003ch2\u003eSpecies Information\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eTrigonostigma heteromorpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eHarlequin Rasbora\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMalaysia, Singapore, Sumatra and southern Thailand, South-East Asia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003e4–5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e5–6 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful (schooling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Tank Size\u003c\/td\u003e\n\u003ctd\u003e60 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e75+ litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eMicro-omnivore (flake, micro-pellet, small live\/frozen foods)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e22–27 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e6.0–7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGH Range\u003c\/td\u003e\n\u003ctd\u003e2–12 dGH (soft to medium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003eNot applicable (freshwater)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003ePlanted community and blackwater aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReef Safe\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlant Safe\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\u003cp\u003eOther small, peaceful fish — tetras, other rasboras, danios, dwarf gouramis, Corydoras, Otocinclus, Kuhli loaches and peaceful dwarf cichlids. Safe with adult shrimp.\u003c\/p\u003e\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\u003cp\u003eLarge or aggressive fish, and boisterous fin-nippers that will harass a small, gentle shoaler.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55232876183843,"sku":"AA1434","price":8.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Harlequin_Rasbora_712b50cd-a09a-46e9-8951-c9371d98d562.jpg?v=1781700589","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/harlequin-rasbora-trigonostigma-heteromorpha","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}