{"product_id":"silver-dollar-4-6cm","title":"Silver Dollar 4–6cm","description":"\u003cdiv class=\"nta-product\"\u003e\n\u003ch2 class=\"nta-title\"\u003eSilver Dollar (\u003cem\u003eMetynnis\u003c\/em\u003e spp.)\u003c\/h2\u003e\n\u003cp class=\"nta-tagline\"\u003eShimmering, active and unmistakably disc-shaped, Silver Dollars are peaceful South American schooling fish that bring constant movement to larger community aquariums. Their bright metallic body and social behaviour make them especially striking when kept in a proper group with plenty of open swimming space.\u003c\/p\u003e\n\u003cdiv class=\"nta-box\"\u003e\n\u003ch3\u003eQuick Facts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eScientific name: \u003cem\u003eMetynnis\u003c\/em\u003e spp. (commonly sold as \u003cem\u003eMetynnis argenteus\u003c\/em\u003e or closely related species)\u003c\/li\u003e\n\u003cli\u003eCommon name: Silver Dollar\u003c\/li\u003e\n\u003cli\u003eOrigin: South America\u003c\/li\u003e\n\u003cli\u003eAdult size: Approximately 15 cm, depending on species\u003c\/li\u003e\n\u003cli\u003eTank size: 280L+ recommended for a proper group\u003c\/li\u003e\n\u003cli\u003eDifficulty: 🟢 Easy to Moderate\u003c\/li\u003e\n\u003cli\u003eTemperament: Peaceful but active and sometimes skittish\u003c\/li\u003e\n\u003cli\u003eSwimming level: Midwater\u003c\/li\u003e\n\u003cli\u003eBest kept: Groups of at least 5–6, with larger groups preferred where space allows\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nta-box\"\u003e\n\u003ch3\u003eIs this for you?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e✔️ Perfect if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou want a larger peaceful schooling fish.\u003c\/li\u003e\n\u003cli\u003eYou have a spacious aquarium with plenty of open swimming room.\u003c\/li\u003e\n\u003cli\u003eYou enjoy active midwater fish.\u003c\/li\u003e\n\u003cli\u003eYou keep medium to large peaceful community species.\u003c\/li\u003e\n\u003cli\u003eYou prefer a striking metallic silver fish with a classic body shape.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e❌ Avoid if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYour aquarium is small.\u003c\/li\u003e\n\u003cli\u003eYou intend to keep only one or two individuals.\u003c\/li\u003e\n\u003cli\u003eYou want to maintain a heavily planted display with delicate plants.\u003c\/li\u003e\n\u003cli\u003eYou keep very small fish that could be intimidated by a large active school.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nta-box\"\u003e\n\u003ch3\u003eWhy choose Silver Dollars?\u003c\/h3\u003e\n\u003cp\u003eSilver Dollars are one of the most recognisable large schooling fish in the aquarium hobby.\u003c\/p\u003e\n\u003cp\u003eTheir deep, laterally compressed bodies reflect light beautifully and create a strong metallic silver flash as the group moves through the aquarium.\u003c\/p\u003e\n\u003cp\u003eThey are peaceful by nature but are most confident when kept in a proper school. A larger group reduces nervous behaviour and creates a much more natural display.\u003c\/p\u003e\n\u003cp\u003eThey are also hardy and adaptable once established, making them an excellent choice for aquarists with the space to accommodate their adult size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nta-box\"\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStriking metallic silver appearance\u003c\/li\u003e\n\u003cli\u003ePeaceful temperament\u003c\/li\u003e\n\u003cli\u003eExcellent schooling behaviour\u003c\/li\u003e\n\u003cli\u003eHardy once established\u003c\/li\u003e\n\u003cli\u003eActive midwater presence\u003c\/li\u003e\n\u003cli\u003eEasy to feed\u003c\/li\u003e\n\u003cli\u003eExcellent for larger community aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nta-box nta-warning\"\u003e\n\u003ch3\u003eCare made simple\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTemperature: Approximately 23–28°C\u003c\/li\u003e\n\u003cli\u003epH: Approximately 6.0–7.5\u003c\/li\u003e\n\u003cli\u003eWater: Clean, stable and well oxygenated\u003c\/li\u003e\n\u003cli\u003eDiet: Primarily herbivorous\/omnivorous\u003c\/li\u003e\n\u003cli\u003eStaple foods: Quality flakes, pellets and vegetable-based foods\u003c\/li\u003e\n\u003cli\u003eSupplement with: Spirulina, algae wafers, blanched vegetables and occasional live or frozen foods\u003c\/li\u003e\n\u003cli\u003eFlow: Gentle to moderate\u003c\/li\u003e\n\u003cli\u003eSetup: Large open swimming areas with secure cover\u003c\/li\u003e\n\u003cli\u003eBe aware that Silver Dollars may eat or damage many aquarium plants.\u003c\/li\u003e\n\u003cli\u003eRegular water changes help maintain strong condition and reduce stress.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nta-box\"\u003e\n\u003ch3\u003ePairs perfectly with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePeaceful medium to large cichlids\u003c\/li\u003e\n\u003cli\u003ePlecos\u003c\/li\u003e\n\u003cli\u003eLarger Corydoras and catfish\u003c\/li\u003e\n\u003cli\u003eOther peaceful medium-sized community fish\u003c\/li\u003e\n\u003cli\u003eOther Silver Dollars\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nta-highlight\"\u003e\n\u003cstrong\u003eNTA Insight:\u003c\/strong\u003e\u003cbr\u003eSilver Dollars are schooling fish, so one or two individuals can appear nervous and skittish. A proper group of five or six or more produces much better behaviour and a more impressive display. Also expect them to treat many soft aquarium plants as food.\u003c\/div\u003e\n\u003cdiv class=\"nta-box\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the scientific name of the Silver Dollar?\u003c\/summary\u003e\u003cp\u003eSeveral closely related \u003cem\u003eMetynnis\u003c\/em\u003e species are sold under the common name Silver Dollar. The common form is often identified as \u003cem\u003eMetynnis argenteus\u003c\/em\u003e, but trade identification can vary, so this listing is conservatively identified as \u003cem\u003eMetynnis\u003c\/em\u003e spp.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow large do Silver Dollars grow?\u003c\/summary\u003e\u003cp\u003eMost common Silver Dollars reach approximately 15 cm as adults, although final size varies somewhat between species.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many Silver Dollars should I keep?\u003c\/summary\u003e\u003cp\u003eKeep at least five to six individuals, with a larger school preferred where aquarium size allows.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre Silver Dollars peaceful?\u003c\/summary\u003e\u003cp\u003eYes. They are generally peaceful schooling fish, although their size and active swimming style mean they are better suited to medium and large community aquariums.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDo Silver Dollars eat plants?\u003c\/summary\u003e\u003cp\u003eOften, yes. They are strongly herbivorous and may eat or damage many live aquarium plants.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should I feed them?\u003c\/summary\u003e\u003cp\u003eOffer quality flakes or pellets with plenty of vegetable matter, including spirulina-based foods, algae wafers and suitable blanched vegetables. Occasional live or frozen foods can also be offered.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDo Silver Dollars need a heater?\u003c\/summary\u003e\u003cp\u003eIn most Australian homes a heater is recommended to maintain a stable tropical temperature, particularly through cooler months.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre Silver Dollars suitable for beginners?\u003c\/summary\u003e\u003cp\u003eThey are hardy and straightforward to feed, but their adult size and need for a proper school mean they require a large, well-established aquarium.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow long do Silver Dollars live?\u003c\/summary\u003e\u003cp\u003eWith good care, Silver Dollars can live for around 10 years or more.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pisces Aquatics","offers":[{"title":"Default Title","offer_id":43244077809873,"sku":"25015","price":19.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/5771\/2849\/files\/silver-dollar-4-6cm-nta_1f8dad8f-f2bd-45cb-8178-e67fddd84ed9.png?v=1786654621","url":"https:\/\/nanotanksaustralia.com.au\/products\/silver-dollar-4-6cm","provider":"Nano Tanks Australia","version":"1.0","type":"link"}