{"product_id":"small-tropical-aquarium-fish-for-sale-uk-neon-costello-hemigrammus-hyanuary-2128","title":"Neon Costello (Hemigrammus hyanuary) — 2,5-3cm","description":"\u003ch2\u003eOverview of Neon Costello\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003esmall tropical aquarium fish\u003c\/strong\u003e, scientifically known as \u003cem\u003eHemigrammus hyanuary\u003c\/em\u003e, a peaceful, shimmering amazon tetra that adds lively movement and subtle color to a planted community aquarium.. Hemigrammus hyanuary, the January tetra or Costello tetra, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae. This fish is found in the Amazon Basin in South America\u003c\/p\u003e\n\u003cp\u003eNative to Amazon Basin, South America, this moderate-care species belongs to the Characidae family and has earned a loyal following among UK aquarists for its unique characteristics and manageable requirements.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n\u003ch3\u003eQuick Facts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003eHemigrammus hyanuary\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Characidae\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e 3.0 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Tank:\u003c\/strong\u003e 75 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Moderate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAppearance and Distinguishing Features\u003c\/h2\u003e\n\u003cp\u003eThe Neon Costello reaches an adult size of approximately 3.0 cm and displays coloration that varies with mood, diet, and water conditions. Peaceful by nature, this species makes an interesting addition to appropriately stocked aquariums.\u003c\/p\u003e\n\u003cp\u003eAt Tropical Fish Co, we select only the healthiest specimens with vibrant coloration and active behavior, ensuring you receive premium quality fish for your aquarium.\u003c\/p\u003e\n\u003ch2\u003eNatural Habitat and Origin\u003c\/h2\u003e\n\u003cp\u003eIn the wild, \u003cem\u003eHemigrammus hyanuary\u003c\/em\u003e inhabits amazon basin, south america. Understanding their natural environment helps us replicate optimal conditions in the home aquarium.\u003c\/p\u003e\n\u003cp\u003eThese waters are typically soft, slightly acidic, and rich in tannins from decomposing leaf litter. Dense vegetation provides shelter and feeding opportunities, while seasonal flooding creates dynamic habitat conditions.\u003c\/p\u003e\n\u003ch2\u003eAquarium Setup and Requirements\u003c\/h2\u003e\n\u003cp\u003eA minimum tank size of \u003cstrong\u003e75 litres\u003c\/strong\u003e is essential for housing Neon Costello. Larger aquariums provide more stable water chemistry and greater swimming space, both critical for long-term health.\u003c\/p\u003e\n\u003cp\u003eProvide appropriate hiding places, suitable substrate, and decorations that match their natural habitat preferences. Good filtration and stable water parameters are essential for all freshwater species.\u003c\/p\u003e\n\u003cp\u003eInvest in quality filtration capable of turning over the tank volume 4-6 times per hour, and perform regular 25-30% water changes weekly to maintain pristine conditions.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eAlways keep Neon Costello in groups of 6+ individuals. Smaller groups cause stress, faded colors, and abnormal behavior. Larger schools create spectacular displays!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWater Parameters and Chemistry\u003c\/h2\u003e\n\u003cp\u003eMaintaining correct water parameters is crucial for the health of Neon Costello:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 23-28C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 5.5-7.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e See species-specific requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmmonia\/Nitrite:\u003c\/strong\u003e 0 ppm (zero tolerance)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrate:\u003c\/strong\u003e Below 20 ppm ideally\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis species prefers soft, acidic water. Use RO water remineralized to appropriate GH\/KH, add Indian almond leaves or alder cones for tannins, and avoid calcareous decorations that raise pH.\u003c\/p\u003e\n\u003cp\u003eInvest in quality test kits and check parameters weekly. Stability is more important than hitting exact numbers - avoid sudden changes that stress fish.\u003c\/p\u003e\n\u003ch2\u003eFeeding and Nutrition\u003c\/h2\u003e\n\u003cp\u003eAs a omnivore, Neon Costello requires a carefully balanced diet to maintain optimal health and coloration.\u003c\/p\u003e\n\u003cp\u003eOffer a varied small-particle diet including quality micro pellets or flakes, frozen and live foods such as daphnia, brine shrimp, and bloodworms, with plant-based matter as a supplement.\u003c\/p\u003e\n\u003cp\u003eVary the diet between quality flakes\/pellets, frozen foods (bloodworms, daphnia, brine shrimp), and occasional fresh vegetables. Nutritional variety promotes vibrant colors, strong immunity, and natural behavior.\u003c\/p\u003e\n\u003cp\u003eRemove uneaten food after 3-5 minutes to prevent water quality degradation. A single weekly fasting day can benefit digestion and overall health.\u003c\/p\u003e\n\u003ch2\u003eBehaviour and Temperament\u003c\/h2\u003e\n\u003cp\u003eThe Neon Costello is classified as \u003cstrong\u003epeaceful\u003c\/strong\u003e, though individual personality can vary with age, tank size, and stocking density.\u003c\/p\u003e\n\u003cp\u003eThis peaceful species thrives in community setups with similarly sized, non-aggressive tankmates. Calm demeanor and gentle nature make it ideal for planted aquariums.\u003c\/p\u003e\n\u003cp\u003eBest kept in a planted, well-filtered aquarium with soft to moderately soft water and subdued lighting. This is a shoaling species that becomes stressed and less colorful if kept in too small a group...\u003c\/p\u003e\n\u003ch2\u003eCompatible Tank Mates\u003c\/h2\u003e\n\u003cp\u003eChoose tankmates carefully to ensure a harmonious community aquarium:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible species include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOther small peaceful tetras\u003c\/li\u003e\n\u003cli\u003eRasboras\u003c\/li\u003e\n\u003cli\u003eCorydoras\u003c\/li\u003e\n\u003cli\u003esmall peaceful dwarf cichlids\u003c\/li\u003e\n\u003cli\u003esmall peaceful loaches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAvoid housing with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge predatory fish\u003c\/li\u003e\n\u003cli\u003efin-nipping species\u003c\/li\u003e\n\u003cli\u003eaggressive cichlids\u003c\/li\u003e\n\u003cli\u003every boisterous tankmates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways research specific compatibility and introduce new fish gradually, monitoring behavior closely during the first few weeks.\u003c\/p\u003e\n\u003ch2\u003eBreeding and Reproduction\u003c\/h2\u003e\n\u003cp\u003eSpawning is typically by scattering eggs among fine-leaved plants or spawning mops in soft, acidic water. Adults should be removed after spawning, as eggs and fry are vulnerable to predation.\u003c\/p\u003e\n\u003cp\u003eEgg-scattering species require dense planting or spawning mops to catch eggs. Remove adult fish immediately after spawning to prevent egg predation. Fry emerge in 24-48 hours and require infusoria or liquid fry food initially.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy Neon Costello from Tropical Fish Co UK\u003c\/h2\u003e\n\u003cp\u003eWhen you choose Tropical Fish Co for your small tropical aquarium fish purchase, you benefit from:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Quality:\u003c\/strong\u003e Every fish is quarantined, health-checked, and feeding well before dispatch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Selection:\u003c\/strong\u003e We hand-pick active, vibrant specimens with excellent coloration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe Delivery:\u003c\/strong\u003e Specialist courier service with heat packs and double-bagged packaging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive Arrival Guarantee:\u003c\/strong\u003e We stand behind every shipment with our comprehensive guarantee\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOngoing Support:\u003c\/strong\u003e Expert care advice available whenever you need it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith decades of combined experience in the UK aquarium trade, we understand what makes healthy, thriving fish. Our Neon Costello specimens are among the finest small tropical aquarium fish available online today.\u003c\/p\u003e\n\u003cp\u003eOrder with confidence knowing you're purchasing from a trusted UK specialist. We're passionate about connecting aquarists with exceptional fish for sale UK wide.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"Default Title","offer_id":57427499286863,"sku":"2128","price":5.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/neon-costello-hemigrammus-hyanuary-25-3cm-hero-driftwood-2128.webp?v=1776549103","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/small-tropical-aquarium-fish-for-sale-uk-neon-costello-hemigrammus-hyanuary-2128","provider":"Tropical Fish Co","version":"1.0","type":"link"}