{"product_id":"red-rainbowfish-glossolepis-incisa","title":"Red Rainbowfish (Glossolepis incisa)","description":"\u003cdiv style=\"color:#000; font-family:Arial,sans-serif; line-height:1.75;\"\u003e\n\n  \u003ch2 style=\"color:#399643;\"\u003e\u003cstrong\u003eRed Rainbowfish (Glossolepis incisa)\u003c\/strong\u003e\u003c\/h2\u003e\n\n  \u003cp\u003e\u003cstrong\u003eOne of the most intensely red freshwater rainbowfish, with mature males developing brilliant scarlet colour, a powerful high-backed body shape, and impressive schooling presence.\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003cp\u003e\n    The Red Rainbowfish, \u003cem\u003eGlossolepis incisa\u003c\/em\u003e, is a striking freshwater rainbowfish native to Lake Sentani in Papua, Indonesia.\n    It is also known as Salmon Red Rainbowfish, New Guinea Rainbowfish, or simply Red Rainbow.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Mature males are the reason this species has become such an iconic aquarium fish.\n    As they grow and settle, males can develop an intense red to scarlet body colour and a noticeably deeper, higher-backed profile.\n    Females are more subtle, typically showing olive, bronze, silver, or yellowish tones.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish are active, social swimmers rather than slow centerpiece fish.\n    Their best appearance comes from a proper group in a long aquarium with open swimming space, good water quality, and a varied diet.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eWhy this fish stands out\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eOne of the strongest true red colours available in a freshwater community fish\u003c\/li\u003e\n    \u003cli\u003eMature males develop an impressive deep-bodied, high-backed shape\u003c\/li\u003e\n    \u003cli\u003eNative to Lake Sentani in Papua, Indonesia\u003c\/li\u003e\n    \u003cli\u003eLarge, active rainbowfish with strong schooling presence\u003c\/li\u003e\n    \u003cli\u003eExcellent centerpiece school for larger planted aquariums\u003c\/li\u003e\n    \u003cli\u003ePeaceful enough for many appropriately sized community fish\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eRainbowfish enthusiasts\u003c\/li\u003e\n    \u003cli\u003eMedium to large planted aquariums\u003c\/li\u003e\n    \u003cli\u003eActive community tanks\u003c\/li\u003e\n    \u003cli\u003eAquarists looking for a genuinely red freshwater schooling fish\u003c\/li\u003e\n    \u003cli\u003eDisplay aquariums with open swimming space\u003c\/li\u003e\n    \u003cli\u003eCustomers looking for Red Rainbowfish in Canada\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eTopick Aquarium Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish are one of those fish that are often underestimated when young.\n    Juveniles and newly arrived males may look bronze, orange, or only lightly red, while a mature, confident male can look like an entirely different fish.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Age, sex, social hierarchy, diet, lighting, stress level, and aquarium conditions all influence colour.\n    This is why buying a young Red Rainbowfish should be viewed as buying a fish with development potential rather than expecting full adult red colour immediately.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    They also look much better in a group.\n    A single male may survive, but keeping several rainbowfish together encourages natural interaction, display behavior, movement, and stronger overall visual impact.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eMale vs Female Red Rainbowfish\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish show strong sexual dimorphism as they mature.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMature males:\u003c\/strong\u003e intense red to scarlet body colour, larger size, and increasingly deep high-backed body shape\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFemales:\u003c\/strong\u003e generally olive, bronze, yellowish, or silver-toned and more streamlined\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eYoung males:\u003c\/strong\u003e may initially look similar to females and develop red colour gradually\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDominant males:\u003c\/strong\u003e often display the strongest colour when comfortable in a group\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    Customers purchasing juveniles should expect colour and body shape to continue developing with maturity.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eBehavior \u0026amp; Group Size\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish are peaceful but very active schooling fish.\n    They spend most of their time swimming through the middle and upper portions of the aquarium.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    We recommend keeping at least \u003cstrong\u003e6 fish\u003c\/strong\u003e, with \u003cstrong\u003e8 or more\u003c\/strong\u003e preferred when aquarium size allows.\n    A proper group helps reduce nervous behavior and encourages males to display naturally.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Because they are fast and energetic, they can intimidate very slow, shy, or extremely small fish even without intentional aggression.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eTank Setup\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish need horizontal swimming space.\n    A long aquarium is much more suitable than a tall aquarium with the same water volume.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eMinimum recommended tank: approximately 55 gallons for a proper adult group\u003c\/li\u003e\n    \u003cli\u003e4-foot aquarium or longer strongly preferred\u003c\/li\u003e\n    \u003cli\u003eKeep open swimming space through the middle and front of the aquarium\u003c\/li\u003e\n    \u003cli\u003ePlants can be concentrated along the sides and background\u003c\/li\u003e\n    \u003cli\u003eGood filtration and oxygenation recommended\u003c\/li\u003e\n    \u003cli\u003eModerate water movement works well\u003c\/li\u003e\n    \u003cli\u003eSecure lid recommended as rainbowfish can jump\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    A planted aquarium works extremely well, but avoid filling the entire tank with dense hardscape.\n    These fish need room to accelerate, school, chase, and display.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eWater Parameters\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003eGlossolepis incisa\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOlder \/ Alternate Scientific Spelling:\u003c\/strong\u003e \u003cem\u003eGlossolepis incisus\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon Names:\u003c\/strong\u003e Red Rainbowfish, Salmon Red Rainbowfish, New Guinea Rainbowfish\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Lake Sentani, Papua, Indonesia\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 22–26°C\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003epH:\u003c\/strong\u003e approximately 7.0–8.0\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e moderate to moderately hard water preferred\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e approximately 12–15 cm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful and active\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Intermediate\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish are better suited to neutral-to-alkaline, moderately mineralized water than very soft, strongly acidic conditions.\n    As always, stable water and consistent maintenance are more important than constantly adjusting parameters.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eFeeding for Strong Red Colour\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish are enthusiastic feeders and accept a wide range of foods.\n    A varied diet is especially important if your goal is strong adult colour and body development.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eHigh-quality rainbowfish or tropical pellets\u003c\/li\u003e\n    \u003cli\u003eQuality flakes\u003c\/li\u003e\n    \u003cli\u003eFrozen brine shrimp\u003c\/li\u003e\n    \u003cli\u003eFrozen daphnia\u003c\/li\u003e\n    \u003cli\u003eKrill-based foods\u003c\/li\u003e\n    \u003cli\u003eBloodworms in moderation\u003c\/li\u003e\n    \u003cli\u003eSpirulina or vegetable-containing foods\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    Carotenoid-rich foods such as quality krill-based diets can help support natural red pigmentation, but genetics, sex, maturity, and overall condition remain the major factors determining final colour.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Feeding more food does not automatically create a redder fish.\n    Good body condition without obesity is the goal.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eTank Mates\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish work best with peaceful to moderately active fish that are large and confident enough to share their swimming space.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eBoesemani Rainbowfish\u003c\/li\u003e\n    \u003cli\u003eTurquoise and other medium-large rainbowfish\u003c\/li\u003e\n    \u003cli\u003eLarger peaceful barbs\u003c\/li\u003e\n    \u003cli\u003eMedium-sized peaceful tetras\u003c\/li\u003e\n    \u003cli\u003eDanios\u003c\/li\u003e\n    \u003cli\u003eCorydoras\u003c\/li\u003e\n    \u003cli\u003ePeaceful larger catfish\u003c\/li\u003e\n    \u003cli\u003eSuitable peaceful gouramis in spacious setups\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    Avoid extremely timid nano fish, very slow long-finned fish, and aggressive predators.\n    The issue with tiny tank mates is often the Red Rainbowfish's speed and size rather than aggression.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eRed Rainbowfish vs Boesemani Rainbowfish\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish and Boesemani Rainbowfish are both medium-large, active schooling rainbowfish, but their appearance is very different.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRed Rainbowfish:\u003c\/strong\u003e mature males develop an almost full-body red to scarlet appearance\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBoesemani Rainbowfish:\u003c\/strong\u003e famous for the contrasting blue front half and yellow-orange rear half\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBoth:\u003c\/strong\u003e need groups, open swimming space, stable water, and a quality varied diet\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    For aquarists specifically looking for the strongest red visual impact in a larger freshwater community, mature male Red Rainbowfish are hard to confuse with any other common rainbowfish.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eBreeding\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish are egg scatterers.\n    Conditioned adults may spawn repeatedly among fine-leaved plants or spawning mops.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Eggs are laid over a period of days rather than in one large single spawn.\n    For intentional breeding, eggs or spawning mops are normally moved away from the adults and fry are started on very small foods before progressing to newly hatched baby brine shrimp.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eCanada-Wide Live Fish Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Red Rainbowfish is available from Topick Aquarium in Canada when in stock.\n    Local pickup is available in Markham, Ontario, and Canada-wide live fish shipping may be available depending on weather, route, size, and livestock condition.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eImportant Note\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\n    Young Red Rainbowfish may not arrive looking fully red.\n    Full male colour develops with age, genetics, social status, nutrition, and stable aquarium conditions.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    If you are purchasing this species specifically for its famous red appearance, remember that females naturally remain much less red than mature males.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#399643;\"\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat is a Red Rainbowfish?\u003c\/strong\u003e\u003cbr\u003e\n    Red Rainbowfish is a freshwater rainbowfish from Lake Sentani in Papua, Indonesia. Its scientific name is \u003cem\u003eGlossolepis incisa\u003c\/em\u003e, and mature males are famous for developing intense red coloration.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eIs the scientific name Glossolepis incisa or Glossolepis incisus?\u003c\/strong\u003e\u003cbr\u003e\n    The currently accepted name is \u003cem\u003eGlossolepis incisa\u003c\/em\u003e. The spelling \u003cem\u003eGlossolepis incisus\u003c\/em\u003e appears frequently in older aquarium literature and online references.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eIs Red Rainbowfish the same as Salmon Red Rainbowfish?\u003c\/strong\u003e\u003cbr\u003e\n    Yes. Salmon Red Rainbowfish is another common name used for \u003cem\u003eGlossolepis incisa\u003c\/em\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eHow big does Red Rainbowfish get?\u003c\/strong\u003e\u003cbr\u003e\n    Adults commonly reach around 12 cm, with large mature males potentially approaching approximately 15 cm depending on genetics and conditions.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eHow many Red Rainbowfish should I keep?\u003c\/strong\u003e\u003cbr\u003e\n    Keep at least 6, with 8 or more preferred when space allows. They are social, active fish and generally look and behave better in a proper group.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhy is my Red Rainbowfish not red?\u003c\/strong\u003e\u003cbr\u003e\n    Young fish, females, stressed fish, and subordinate males may show little red colour. Mature confident males display the strongest red, and colour improves with age, good nutrition, stable water, and low stress.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eAre female Red Rainbowfish red?\u003c\/strong\u003e\u003cbr\u003e\n    Not like adult males. Females are normally much more subtle, with olive, bronze, silver, or yellowish coloration.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat size tank does Red Rainbowfish need?\u003c\/strong\u003e\u003cbr\u003e\n    A 4-foot aquarium around 55 gallons or larger is a practical starting point for a proper adult group. Horizontal swimming space is especially important.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eCan Red Rainbowfish live with Boesemani Rainbowfish?\u003c\/strong\u003e\u003cbr\u003e\n    Yes. They can make compatible tank mates when the aquarium is large enough for an active mixed rainbowfish group and all fish have sufficient swimming space and food access.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eIs Red Rainbowfish aggressive?\u003c\/strong\u003e\u003cbr\u003e\n    It is generally peaceful, but very active. Its speed and adult size can intimidate extremely small, slow, or shy fish even when no true aggression is occurring.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat should I feed Red Rainbowfish for better colour?\u003c\/strong\u003e\u003cbr\u003e\n    Feed a varied diet including quality pellets, flakes, frozen brine shrimp, daphnia, krill-based foods, and some plant-based foods. Strong colour also depends heavily on genetics, sex, maturity, and overall health.\n  \u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Topick Aquarium","offers":[{"title":"Show Male 5-6cm","offer_id":46308490510570,"sku":null,"price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/9091\/5818\/files\/images_28_2bff8efd-12d6-4c49-b18e-7bcb59fc8a1c.jpg?v=1789928708","url":"https:\/\/topickaquarium.com\/products\/red-rainbowfish-glossolepis-incisa","provider":"Topick Aquarium","version":"1.0","type":"link"}