{"product_id":"glofish®-cosmic-blue®-tetra","title":"GloFish® Cosmic Blue® Tetra","description":"\u003cp\u003eThe \u003cstrong\u003eGloFish® Cosmic Blue® Tetra\u003c\/strong\u003e is a vivid freshwater schooling fish with bright fluorescent blue coloration. It combines the active swimming behavior and deep-bodied shape of a skirt tetra with the distinctive Cosmic Blue® appearance of the GloFish line.\u003c\/p\u003e\n\u003cp\u003eCosmic Blue® Tetras are colorful under standard white aquarium lighting and become especially vibrant under blue LED lighting. GloFish® fluorescent fish are not painted, injected, or artificially dyed. Their coloration is inherited and remains with them throughout their lives.\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\u003eFreshwater schooling community fish\u003c\/li\u003e\n\u003cli\u003eActive midwater swimmer\u003c\/li\u003e\n\u003cli\u003eColor appears bright under white light and especially vivid under blue LEDs\u003c\/li\u003e\n\u003cli\u003eNot painted, injected, or artificially dyed\u003c\/li\u003e\n\u003cli\u003eBest kept in a group of compatible skirt tetras\u003c\/li\u003e\n\u003cli\u003eSuitable for established tropical community aquariums\u003c\/li\u003e\n\u003cli\u003eCan school with other GloFish® tetra colors and standard skirt tetras\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® Tetra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFish Type:\u003c\/strong\u003e Fluorescent skirt tetra\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 and active\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 compatible skirt tetras\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Minimum Tank Size:\u003c\/strong\u003e 20 gallons for a group\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwimming Level:\u003c\/strong\u003e Middle of the aquarium\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 regular 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® Tetras are social schooling fish and should not be kept alone. Maintain a group of at least six compatible skirt tetras, with a larger group preferred when aquarium space allows.\u003c\/p\u003e\n\u003cp\u003eDifferent GloFish® skirt tetra colors can generally be combined in the same school. Standard black skirt and white skirt tetras may also be kept with them because they share similar behavior and care requirements.\u003c\/p\u003e\n\u003cp\u003eSkirt tetras may occasionally chase or nip, particularly when kept in groups that are too small. A properly sized school, adequate swimming room, and planted areas can help encourage more natural social behavior.\u003c\/p\u003e\n\u003ch3\u003eAquarium Setup\u003c\/h3\u003e\n\u003cp\u003eProvide a fully cycled, heated, and filtered freshwater aquarium with open swimming space through the middle. Plants and aquarium-safe décor can be arranged along the sides and back to provide shelter without restricting movement.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse a properly cycled aquarium\u003c\/li\u003e\n\u003cli\u003eProvide reliable filtration and good oxygenation\u003c\/li\u003e\n\u003cli\u003eLeave open space for schooling and swimming\u003c\/li\u003e\n\u003cli\u003eAdd live or artificial plants for cover\u003c\/li\u003e\n\u003cli\u003eUse a secure aquarium lid\u003c\/li\u003e\n\u003cli\u003ePerform routine partial water changes\u003c\/li\u003e\n\u003cli\u003eMaintain a regular day-and-night lighting schedule\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLighting\u003c\/h3\u003e\n\u003cp\u003eCosmic Blue® Tetras remain colorful under standard white aquarium lighting. Blue LED lighting can make their fluorescent blue coloration appear especially vivid.\u003c\/p\u003e\n\u003cp\u003eDo not leave aquarium lights on continuously. Provide a normal period of darkness each day so the fish can rest.\u003c\/p\u003e\n\u003ch3\u003eCompatible Tankmates\u003c\/h3\u003e\n\u003cp\u003eChoose peaceful, similarly sized community fish that prefer comparable tropical water conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOther GloFish® skirt tetras\u003c\/li\u003e\n\u003cli\u003eStandard black or white skirt tetras\u003c\/li\u003e\n\u003cli\u003ePeaceful rasboras\u003c\/li\u003e\n\u003cli\u003eDanios\u003c\/li\u003e\n\u003cli\u003eCorydoras catfish\u003c\/li\u003e\n\u003cli\u003eSmall to medium peaceful barbs\u003c\/li\u003e\n\u003cli\u003ePeaceful livebearers\u003c\/li\u003e\n\u003cli\u003eAppropriately sized peaceful gouramis\u003c\/li\u003e\n\u003cli\u003eOther 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 timid or long-finned tankmates that may be stressed or nipped.\u003c\/p\u003e\n\u003ch3\u003eFeeding\u003c\/h3\u003e\n\u003cp\u003eGloFish® Cosmic Blue® Tetras 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\u003eSmall floating or 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 a small amount once or twice daily. Offer only what the fish can consume within a few minutes and avoid allowing excess food to accumulate in the aquarium.\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 15–20 minutes to equalize temperature.\u003c\/li\u003e\n\u003cli\u003eGradually add small amounts of aquarium water to the bag or acclimation container.\u003c\/li\u003e\n\u003cli\u003eCarefully net the fish into the aquarium.\u003c\/li\u003e\n\u003cli\u003eAvoid pouring transport water into 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 school rather than as a single fish.\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 normal light-and-dark cycle.\u003c\/li\u003e\n\u003cli\u003eNever release aquarium fish into local waterways.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAre Cosmic Blue® Tetras dyed?\u003c\/strong\u003e\u003cbr\u003eNo. GloFish® fluorescent fish are not painted, injected, or dyed. Their fluorescent coloration is inherited.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they need special food or water?\u003c\/strong\u003e\u003cbr\u003eNo. Their general care is the same as compatible non-fluorescent skirt tetras. Feed a varied freshwater community fish diet and maintain stable water quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they glow in complete darkness?\u003c\/strong\u003e\u003cbr\u003eNo. Their fluorescent coloration is visible when illuminated and appears especially bright under blue LED aquarium lighting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan different GloFish® tetra colors live together?\u003c\/strong\u003e\u003cbr\u003eYes. Different colors of GloFish® skirt tetras can generally be kept together and count toward the same school.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I keep one Cosmic Blue® Tetra alone?\u003c\/strong\u003e\u003cbr\u003eKeeping one alone is not recommended. Maintain at least six compatible skirt tetras together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they suitable for a five-gallon aquarium?\u003c\/strong\u003e\u003cbr\u003eNo. They are active schooling fish. A 20-gallon aquarium is a more appropriate starting size for a group.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the blue color fade?\u003c\/strong\u003e\u003cbr\u003eThe inherited coloration remains with the fish, although its appearance may vary with lighting, health, stress, diet, and aquarium conditions.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eGloFish® Cosmic Blue® Tetras 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":54424090837205,"sku":null,"price":12.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/tropicaltreasureswyo.com\/products\/glofish%c2%ae-cosmic-blue%c2%ae-tetra","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}