{"product_id":"glofish®-cosmic-blue®-danio","title":"GloFish® Cosmic Blue® Danio","description":"\u003cp\u003eThe \u003cstrong\u003eGloFish® Cosmic Blue® Danio\u003c\/strong\u003e is a lively freshwater schooling fish with vivid fluorescent blue coloration. Based on the zebra danio, this active species is known for fast swimming, energetic group behavior, and frequent activity near the upper and middle areas of the aquarium.\u003c\/p\u003e\n\u003cp\u003eCosmic Blue® Danios are colorful under standard white aquarium lights and appear especially vivid under blue LED lighting. GloFish® fluorescent fish are not painted, injected, or artificially dyed. Their fluorescent coloration is inherited from their parents.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBright Cosmic Blue® fluorescent coloration\u003c\/li\u003e\n\u003cli\u003eActive freshwater schooling fish\u003c\/li\u003e\n\u003cli\u003eBased on the hardy zebra danio\u003c\/li\u003e\n\u003cli\u003eFast-moving upper- and midwater swimmer\u003c\/li\u003e\n\u003cli\u003eBest maintained in a group\u003c\/li\u003e\n\u003cli\u003eSuitable for established freshwater community aquariums\u003c\/li\u003e\n\u003cli\u003eColor is visible under white lighting and especially vivid under blue LEDs\u003c\/li\u003e\n\u003cli\u003eNot painted, injected, or artificially dyed\u003c\/li\u003e\n\u003cli\u003eCan school with other compatible GloFish® danio colors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFish Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Name:\u003c\/strong\u003e GloFish® Cosmic Blue® Danio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFish Type:\u003c\/strong\u003e Fluorescent zebra danio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Type:\u003c\/strong\u003e Freshwater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Generally peaceful, active, and energetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e Approximately 2–2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Group Size:\u003c\/strong\u003e At least 6 danios\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Minimum Tank Size:\u003c\/strong\u003e 20 gallons, preferably a longer aquarium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwimming Level:\u003c\/strong\u003e Upper and middle levels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended Water Parameters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e Approximately 72–80°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH:\u003c\/strong\u003e Approximately 6.5–7.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Hardness:\u003c\/strong\u003e Soft to moderately hard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmmonia:\u003c\/strong\u003e 0 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrite:\u003c\/strong\u003e 0 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrate:\u003c\/strong\u003e Kept as low as practical through routine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStable water quality is more important than reaching one exact pH or hardness value. Avoid sudden changes in temperature or water chemistry.\u003c\/p\u003e\n\u003ch3\u003eSchooling and Behavior\u003c\/h3\u003e\n\u003cp\u003eCosmic Blue® Danios are highly social fish and should be kept in a group rather than alone. A school of at least six is recommended, although a larger group may display more natural behavior when aquarium space allows.\u003c\/p\u003e\n\u003cp\u003eDifferent GloFish® danio colors can generally be combined in the same school. Compatible standard zebra danios may also be kept with them because they share similar behavior and care requirements.\u003c\/p\u003e\n\u003cp\u003eDanios are fast and constantly active. Their energetic movement can overwhelm very slow, timid, or long-finned fish, so tankmates should be selected carefully.\u003c\/p\u003e\n\u003ch3\u003eAquarium Setup\u003c\/h3\u003e\n\u003cp\u003eProvide a fully cycled, filtered aquarium with plenty of open horizontal swimming space. A longer aquarium is generally preferable to a tall, narrow tank because danios spend much of their time swimming back and forth.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse a properly cycled freshwater aquarium\u003c\/li\u003e\n\u003cli\u003eProvide reliable filtration and good oxygenation\u003c\/li\u003e\n\u003cli\u003eLeave ample open swimming room\u003c\/li\u003e\n\u003cli\u003eAdd live or artificial plants around the sides and back\u003c\/li\u003e\n\u003cli\u003eUse a secure lid because danios may jump\u003c\/li\u003e\n\u003cli\u003eProvide moderate water movement\u003c\/li\u003e\n\u003cli\u003ePerform regular partial water changes\u003c\/li\u003e\n\u003cli\u003eMaintain a normal day-and-night lighting schedule\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLighting\u003c\/h3\u003e\n\u003cp\u003eCosmic Blue® Danios remain colorful under ordinary white aquarium lighting. Blue LED lighting makes their fluorescent coloration appear especially vivid.\u003c\/p\u003e\n\u003cp\u003eLighting should not be left on continuously. GloFish recommends limiting aquarium lighting to no more than approximately 12 hours per day so the fish receive a regular period of darkness.\u003c\/p\u003e\n\u003ch3\u003eCompatible Tankmates\u003c\/h3\u003e\n\u003cp\u003eChoose peaceful, active community fish that can comfortably live with the danio’s fast swimming and energetic behavior.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOther GloFish® danios\u003c\/li\u003e\n\u003cli\u003eStandard zebra danios\u003c\/li\u003e\n\u003cli\u003eActive tetras\u003c\/li\u003e\n\u003cli\u003ePeaceful barbs\u003c\/li\u003e\n\u003cli\u003eRasboras\u003c\/li\u003e\n\u003cli\u003eCorydoras catfish\u003c\/li\u003e\n\u003cli\u003ePeaceful livebearers\u003c\/li\u003e\n\u003cli\u003eSmall rainbowfish\u003c\/li\u003e\n\u003cli\u003eOther similarly sized, non-aggressive community fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAvoid highly aggressive fish, species large enough to eat them, and very slow or delicate long-finned tankmates that may be stressed or chased.\u003c\/p\u003e\n\u003ch3\u003eFeeding\u003c\/h3\u003e\n\u003cp\u003eGloFish® Cosmic Blue® Danios are omnivores and should receive a varied diet of appropriately sized foods.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuality tropical flakes\u003c\/li\u003e\n\u003cli\u003eMicro pellets or small slow-sinking pellets\u003c\/li\u003e\n\u003cli\u003eFrozen brine shrimp\u003c\/li\u003e\n\u003cli\u003eFrozen daphnia\u003c\/li\u003e\n\u003cli\u003eFrozen or freeze-dried bloodworms as an occasional food\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFeed small amounts once or twice daily, offering only what the fish can consume within a few minutes. GloFish also recommends its flake or MicroCrisp foods for danios, tetras, and barbs.\u003c\/p\u003e\n\u003ch3\u003eAcclimation\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the aquarium lights before introducing the fish.\u003c\/li\u003e\n\u003cli\u003eFloat the unopened transport bag for approximately 15 minutes to equalize temperature.\u003c\/li\u003e\n\u003cli\u003eOpen the bag and gradually add small amounts of aquarium water.\u003c\/li\u003e\n\u003cli\u003eWait several minutes between additions.\u003c\/li\u003e\n\u003cli\u003eCarefully net the fish into the aquarium.\u003c\/li\u003e\n\u003cli\u003eAvoid adding transport water to the display aquarium when practical.\u003c\/li\u003e\n\u003cli\u003eLeave the aquarium lights off for several hours while the fish settle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eQuarantine new fish before adding them to an established aquarium whenever a suitable quarantine system is available.\u003c\/p\u003e\n\u003ch3\u003eImportant Care Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKeep in a group rather than as a single fish.\u003c\/li\u003e\n\u003cli\u003eProvide ample horizontal swimming room.\u003c\/li\u003e\n\u003cli\u003eUse a secure aquarium lid.\u003c\/li\u003e\n\u003cli\u003eDo not add to an uncycled aquarium.\u003c\/li\u003e\n\u003cli\u003eMaintain stable temperature and water quality.\u003c\/li\u003e\n\u003cli\u003eAvoid overcrowding and incompatible tankmates.\u003c\/li\u003e\n\u003cli\u003eProvide a regular light-and-dark cycle.\u003c\/li\u003e\n\u003cli\u003eNever release aquarium fish into local waterways.\u003c\/li\u003e\n\u003cli\u003eCommercial reproduction of GloFish® fluorescent fish is restricted by the manufacturer’s licensing terms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAre Cosmic Blue® Danios dyed?\u003c\/strong\u003e\u003cbr\u003eNo. GloFish® fluorescent fish are not painted, injected, or dyed. Their bright fluorescent coloration is inherited.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they require special food or water?\u003c\/strong\u003e\u003cbr\u003eNo. Their general care is the same as standard zebra danios. Provide stable freshwater conditions and a varied, high-quality diet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they glow in complete darkness?\u003c\/strong\u003e\u003cbr\u003eNo. Their fluorescence becomes visible when illuminated and appears especially vivid under blue LED aquarium lighting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan different GloFish® danio colors live together?\u003c\/strong\u003e\u003cbr\u003eYes. Different color varieties of GloFish® danios can generally be maintained together and count toward the same school.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I keep only one?\u003c\/strong\u003e\u003cbr\u003eNo. Danios are social schooling fish and should be maintained in a group of at least six.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they suitable for a five-gallon aquarium?\u003c\/strong\u003e\u003cbr\u003eNo. They are fast, active schooling fish that require substantially more swimming room. A 20-gallon-long-style aquarium is a more appropriate starting point for a group.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan they live with GloFish® tetras?\u003c\/strong\u003e\u003cbr\u003eThey may be housed with compatible GloFish® tetras in an appropriately sized community aquarium, but danios and tetras should each have enough members of their own species group.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the blue color fade?\u003c\/strong\u003e\u003cbr\u003eThe inherited color remains with the fish, although its appearance may vary with lighting, health, stress, diet, and water quality.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eGloFish® Cosmic Blue® Danios are available at Tropical Treasures Wyo in Cheyenne, Wyoming, when in stock. Live fish are available for in-store purchase or local pickup only and are not available for shipping.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":54424099684565,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/tropicaltreasureswyo.com\/products\/glofish%c2%ae-cosmic-blue%c2%ae-danio","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}