{"product_id":"silver-dollar-xxl-for-sale-uk","title":"Silver dollar (Metynnis argenteus) — XXL","description":"\u003ch2\u003eOverview of Silver dollar\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003esilver dollar\u003c\/strong\u003e, scientifically known as \u003cem\u003eMetynnis argenteus\u003c\/em\u003e, a classic, peaceful schooling fish with a bright silver body and fast, graceful swimming behavior, ideal for large south american community aquariums.. Metynnis argenteus is a species of freshwater ray-finned fishes belonging to the family Serrasalmidae, which includes the pacus, piranhas and related fishes. This fish is endemic to the Tapajós River \u003c\/p\u003e\n\u003cp\u003eNative to Tapajós River Basin, Brazil; Amazon basin, South America, this moderate-care species belongs to the Serrasalmidae 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\u003eMetynnis argenteus\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Serrasalmidae\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult Size:\u003c\/strong\u003e 20 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Tank:\u003c\/strong\u003e 400 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\u003eTrue to its name, the silver dollar fish displays a round, disc-shaped body with brilliant silver scales that catch and reflect light. Adults can reach an impressive 20 cm, making them a substantial presence in larger 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\u003eMetynnis argenteus\u003c\/em\u003e inhabits tapajós river basin, brazil; 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\u003e400 litres\u003c\/strong\u003e is essential for housing Silver dollar. 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 Silver dollar 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 Silver dollar:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 24-28C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 6.0-7.5\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 with strong herbivorous tendencies, Silver dollar requires a carefully balanced diet to maintain optimal health and coloration.\u003c\/p\u003e\n\u003cp\u003ePrimarily plant-based with some omnivorous tendencies; offer a varied diet of high-quality spirulina-based flakes or pellets, blanched vegetables such as spinach, zucchini, and peas, plus occasional...\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 Silver dollar 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 spacious, well-filtered aquarium with open swimming room and secure cover; they are schooling fish that become stressed and skittish when kept singly or in small numbers. Provide...\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 silver dollars\u003c\/li\u003e\n\u003cli\u003ePeaceful medium to large South American community fish\u003c\/li\u003e\n\u003cli\u003ePeaceful plecos\u003c\/li\u003e\n\u003cli\u003eGeophagus and other peaceful cichlids of similar size\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\u003eSmall fish that can be swallowed\u003c\/li\u003e\n\u003cli\u003eFin-nipping species\u003c\/li\u003e\n\u003cli\u003eAggressive cichlids\u003c\/li\u003e\n\u003cli\u003eLarge predatory fish\u003c\/li\u003e\n\u003cli\u003eVery delicate slow-moving fish\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\u003eBreeding is uncommon in home aquariums; pairs or groups may spawn in soft, warm water with dense planting or fine-leaved cover, and adults may eat eggs and fry.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy Silver dollar from Tropical Fish Co UK\u003c\/h2\u003e\n\u003cp\u003eWhen you choose Tropical Fish Co for your silver dollar 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 Silver dollar specimens are among the finest silver dollar 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":"XXL","offer_id":57427529793871,"sku":"K302","price":94.99,"currency_code":"GBP","in_stock":false},{"title":"5 - 6 cm","offer_id":57456887234895,"sku":"K300","price":34.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/silver-dollar-metynnis-argenteus-xxl-hero-driftwood-k302.webp?v=1776551747","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/silver-dollar-xxl-for-sale-uk","provider":"Tropical Fish Co","version":"1.0","type":"link"}