{"product_id":"harlequin-rasbora-large","title":"Harlequin Rasbora (Trigonostigma heteromorpha)","description":"\u003cdiv style=\"background:#E3F2FD;border-left:4px solid #1E88E5;padding:10px 14px;margin:0 0 14px;font-size:0.95em;\"\u003e\n\u003cstrong\u003eIn-store pickup only.\u003c\/strong\u003e Your order is reserved, we hold off on bagging until you arrive so it stays healthy in its display tank.\n\u003c\/div\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHarlequin Rasbora\u003c\/strong\u003e (\u003cem\u003eTrigonostigma heteromorpha\u003c\/em\u003e) is the fish that made rasboras famous: a copper-pink body carrying one bold black wedge, moving as a tight group through the middle of the tank. It has been a community-tank staple for a century for good reason, hardy, genuinely peaceful, small enough for a modest tank, and striking in a way that photos never quite catch. Put ten of them over a dark substrate in a planted tank and they read like a single moving shape. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/fresh-water\"\u003efreshwater livestock\u003c\/a\u003e to build the community around them.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eCare Guide\u003c\/h3\u003e\n\u003cp\u003eHarlequins come from gently flowing forest streams and peat swamps in Thailand, Malaysia, Singapore, Sumatra and Borneo, where the water runs soft, tannin-stained and thick with \u003cem\u003eCryptocoryne\u003c\/em\u003e. They are adaptable enough for a normal community tank, but they show their best color when the tank leans toward that: dim or plant-shaded light, dark substrate, and a few \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-catappa-leaves-10pk\"\u003ecatappa leaves\u003c\/a\u003e in the water.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup size:\u003c\/strong\u003e eight to ten minimum. This is the single biggest thing people get wrong. A group of three sits in a corner and stays washed out; a real school spreads out, holds formation and colors up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank size:\u003c\/strong\u003e a 24 x 12 inch footprint (about 15 gallons) is the practical minimum, and a 20 gallon long is a better home for a school of ten.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater:\u003c\/strong\u003e 72 to 79°F, pH 6.0 to 7.5, soft to moderately hard. They tolerate a wider band than that (published ranges run 70 to 82°F and down to pH 5.0), but stability matters more than hitting a number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness is the local catch:\u003c\/strong\u003e our Lawrenceville tap is extremely soft, below the 1 to 12 dGH range this fish wants. If you keep them on straight tap, a remineralizer on every water change keeps the general hardness where it belongs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e a micropredator in the wild. Quality flakes and small granules as the staple, plus frozen or live daphnia, brine shrimp and bloodworms a couple of times a week for color and conditioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBehavior:\u003c\/strong\u003e very peaceful, active, mid-water. They do not nip and they do not bother anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e 5 to 6 years with good care, which is long for a fish this size.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:520px;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eCommon Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eHarlequin Rasbora\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eScientific Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cem\u003eTrigonostigma heteromorpha\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eSoutheast Asia, Thailand through Malaysia, Singapore, Sumatra and Borneo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eAdult Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eAbout 1.75 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eCare Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eTemperament\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003ePeaceful, schooling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eDiet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eOmnivore, micropredator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eWater Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e72 to 79°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e6.0 to 7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eHardness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e1 to 12 dGH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eMinimum Tank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e15 gallons, 20 long preferred\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eKeep In Groups Of\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e8 or more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eHarlequins are one of the easiest community fish to plan around. They stay in the middle of the tank, they ignore everyone, and the only real rule is keeping them away from anything big enough to treat a two inch fish as food.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood tankmates:\u003c\/strong\u003e small tetras and other rasboras, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/cherry-barb-puntius-titteya-freshwater\"\u003eCherry Barbs\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/zebra-danio-danio-rerio-freshwater\"\u003eZebra Danios\u003c\/a\u003e, and bottom dwellers like \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/panda-cory-corydoras-panda-freshwater\"\u003ePanda Corydoras\u003c\/a\u003e and the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/kuhli-loach\"\u003eKuhli Loach\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso great with:\u003c\/strong\u003e peaceful gouramis such as the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/pearl-gourami-trichopodus-leerii-freshwater\"\u003ePearl Gourami\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-invertebrates\"\u003enerite snails and shrimp\u003c\/a\u003e, and a heavily planted tank, see our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\"\u003elive plants\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse caution with:\u003c\/strong\u003e anything large or predatory, including angelfish once they are grown, and boisterous fish that will outcompete them at feeding time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep the school intact.\u003c\/strong\u003e Numbers are the whole trick with this fish. Eight is the floor, twelve is where it starts to look like the pictures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eRecommended Foods \u0026amp; Supplies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eQuality tropical flakes or small granules as the daily staple, their mouths are small so size the food accordingly\u003c\/li\u003e\n\u003cli\u003eFrozen daphnia, brine shrimp and bloodworms two or three times a week for color\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-catappa-leaves-10pk\"\u003eCatappa leaves\u003c\/a\u003e for the tannin-stained water they evolved in\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\"\u003eLive plants\u003c\/a\u003e and a dark substrate, the fastest way to deepen their copper color\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow many should I buy?\u003c\/strong\u003e\u003cbr\u003eEight at an absolute minimum, ten to twelve if the tank allows. This is not an upsell, it is the difference between a shy fish hiding in a corner and the schooling display you bought them for.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they good for beginners?\u003c\/strong\u003e\u003cbr\u003eYes, one of the best. They are hardy, adaptable, long lived and completely peaceful.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I tell males from females?\u003c\/strong\u003e\u003cbr\u003eLook at the black wedge. On males the lower edge is sharp and well defined; on females it is rounder and softer. Females are also a little larger and fuller bodied.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill they work in a 10 gallon?\u003c\/strong\u003e\u003cbr\u003eWe would not recommend it. A proper school needs a 24 inch footprint, so a 15 or 20 gallon long is the realistic starting point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they need special water?\u003c\/strong\u003e\u003cbr\u003eNot special, but do check your hardness. Local tap here is very soft and sits under their preferred range, so a remineralizer added with each water change keeps them in good shape long term.\u003c\/p\u003e\n","brand":"Squeaky's Aquatics","offers":[{"title":"Default Title","offer_id":48077653999835,"sku":"FW1-F1464","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/9302ac97-25a4-4abd-93af-a0ea39775cc2.png?v=1789909258","url":"https:\/\/squeakysaquatics.com\/products\/harlequin-rasbora-large","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}