{"product_id":"derasa-clam-tridacna-derasa-saltwater","title":"Derasa Clam (Tridacna derasa) — Striped with Blue Rim","description":"\u003cdiv style=\"background:#E0F7FA;border-left:4px solid #006064;padding:10px 14px;margin:0 0 14px;font-size:0.95em;\"\u003e\n\u003cstrong\u003eIn-store pickup only.\u003c\/strong\u003e Pick up at \u003cstrong\u003e1885 Braselton Hwy, Suite D, Lawrenceville, GA\u003c\/strong\u003e.\u003cbr\u003e\nYour order is reserved — we hold off on bagging until you arrive, so it stays healthy in its display tank.\n\u003c\/div\u003e\n\u003cp\u003eThis \u003cstrong\u003eDerasa Clam\u003c\/strong\u003e (\u003cem\u003eTridacna derasa\u003c\/em\u003e) is a stunning, striped specimen with a vivid blue rim along its mantle. One of the hardiest and fastest-growing giant clams, the Derasa is a living centerpiece for an established reef — a photosynthetic showpiece that adds movement, color, and biological filtration. Pair it with the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater livestock\u003c\/a\u003e and corals.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eCare Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCare level:\u003c\/strong\u003e Intermediate — among the most forgiving giant clams, making it a great first clam for a stable reef.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e High. Like corals, it relies on symbiotic zooxanthellae, so it needs strong reef lighting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlacement:\u003c\/strong\u003e Rests well on the sandbed; smaller clams can sit on low rockwork. Choose a permanent spot — clams dislike being moved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium \u0026amp; alkalinity:\u003c\/strong\u003e Builds a large shell, so it needs stable, elevated calcium (400–450 ppm) and alkalinity (8–11 dKH). Dose a calcium\/alkalinity\/magnesium supplement or run a coral-pro salt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeeding:\u003c\/strong\u003e Mostly photosynthetic, but it also filter-feeds — dose phytoplankton for the best growth, especially while it's small.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcclimation:\u003c\/strong\u003e Drip acclimate, then place gently. Avoid sudden swings in salinity, light, or flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eCommon Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eDerasa Clam, Smooth Giant Clam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eScientific Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cem\u003eTridacna derasa\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eIndo-Pacific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eAdult Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eLarge — up to ~20\" over many years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eCare Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eTemperament\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003ePeaceful\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eDiet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003ePhotosynthetic + filter feeder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eLighting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eHigh (reef)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003ePlacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSandbed or low rockwork\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eWater Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e72–78°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e8.1–8.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eSalinity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e1.024–1.026 SG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eCalcium \/ Alkalinity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e400–450 ppm \/ 8–11 dKH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eReef Safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThe Derasa Clam is reef-safe and peaceful, thriving alongside corals and most reef inhabitants:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCorals and other photosynthetic reef invertebrates\u003c\/li\u003e\n\u003cli\u003ePeaceful reef fish and reef-safe cleanup crew\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAvoid known mantle-nippers — some large angelfish, certain wrasses, and triggers may pick at the clam. Inspect new clams for tiny pyramidellid snails (a common clam pest) and keep parameters stable, as clams are sensitive to swings.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Foods \u0026amp; Supplies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/bulldawg-reef-juice-clam-blend-live-phytoplankton\"\u003eReef Juice Clam Blend Phytoplankton\u003c\/a\u003e — a live phyto blend formulated for clams\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-rpm-liquid-pt-2-calcium-reef-supplement\"\u003eFritz RPM Calcium\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fritz-rpm-liquid-pt-1-alkalinity-reef-supplement\"\u003eAlkalinity\u003c\/a\u003e — fuel for shell growth\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/red-sea-coral-pro-salt-mix-55-gallon\"\u003eRed Sea Coral Pro Salt\u003c\/a\u003e — elevated calcium\/alkalinity for clams and corals\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/aquailumination-212459-prime-16-hd-led-reef-light-white\"\u003eAI Prime 16 HD Reef Light\u003c\/a\u003e — high-output lighting for photosynthesis\u003c\/li\u003e\n\u003cli\u003eBuild your reef with our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater livestock\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Derasa Clam good for a first clam?\u003c\/strong\u003e\u003cbr\u003eYes — it's one of the hardiest, fastest-growing giant clams. It still needs strong light and stable calcium\/alkalinity, so it's best in an established reef.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to feed it?\u003c\/strong\u003e\u003cbr\u003eIt's largely photosynthetic, but dosing live phytoplankton boosts growth and health, especially for smaller clams.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere should I place it?\u003c\/strong\u003e\u003cbr\u003eOn the sandbed (or low rock for small specimens) where it receives strong light and moderate flow. Pick a permanent location and avoid moving it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill my fish bother it?\u003c\/strong\u003e\u003cbr\u003eMost reef fish leave clams alone, but avoid known mantle-nippers like some large angelfish and certain wrasses. Watch for pyramidellid snails as a pest.\u003c\/p\u003e","brand":"Squeaky's Aquatics","offers":[{"title":"Default Title","offer_id":48798386389211,"sku":"2565532","price":49.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_c891b09c-882b-4446-865a-41ce4d359ae5.png?v=1779383126","url":"https:\/\/squeakysaquatics.com\/products\/derasa-clam-tridacna-derasa-saltwater","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}