{"product_id":"red-knobby-starfish","title":"Red Knobby Starfish","description":"\u003cp data-start=\"24\" data-end=\"377\"\u003eRed Knobby Starfish (\u003cem data-start=\"45\" data-end=\"66\"\u003eProtoreaster lincki\u003c\/em\u003e) are large ornamental sea stars known for their bright red to orange coloration and distinctive raised black knobs that cover their body and arms. Native to sandy lagoons and shallow reef environments throughout the Indo-Pacific, these starfish slowly roam across the substrate and rockwork searching for food.\u003c\/p\u003e\n\u003cp data-start=\"379\" data-end=\"548\"\u003eTheir bold appearance makes them popular display animals in larger marine aquariums, though they require stable water conditions and a mature system to thrive long term.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1evwddo\" data-start=\"550\" data-end=\"570\"\u003eCare Requirements\u003c\/h2\u003e\n\u003cp data-start=\"572\" data-end=\"804\"\u003e\u003cstrong data-start=\"572\" data-end=\"587\"\u003eCare Level:\u003c\/strong\u003e Moderate to Difficult – Requires stable water quality and regular feeding\u003cbr data-start=\"661\" data-end=\"664\"\u003e\u003cstrong data-start=\"664\" data-end=\"686\"\u003eMinimum Tank Size:\u003c\/strong\u003e 75+ gallons\u003cbr data-start=\"698\" data-end=\"701\"\u003e\u003cstrong data-start=\"701\" data-end=\"720\"\u003eAquarium Setup:\u003c\/strong\u003e Established aquarium with open sandbed areas, mature live rock, and stable salinity\u003c\/p\u003e\n\u003cp data-start=\"806\" data-end=\"996\"\u003eRed Knobby Starfish do best in mature aquariums with plenty of space to move and forage. Stable parameters are extremely important, as sea stars are sensitive to rapid environmental changes.\u003c\/p\u003e\n\u003ch2 data-section-id=\"a0ylww\" data-start=\"998\" data-end=\"1021\"\u003eDiet \u0026amp; Nutrition\u003c\/h2\u003e\n\u003cp data-start=\"1023\" data-end=\"1169\"\u003eRed Knobby Starfish are opportunistic scavengers that consume meaty foods, detritus, and naturally occurring organic material within the aquarium.\u003c\/p\u003e\n\u003cp data-start=\"1171\" data-end=\"1241\"\u003e\u003cstrong data-start=\"1171\" data-end=\"1180\"\u003eDiet:\u003c\/strong\u003e Omnivore\/Scavenger – Feeds on meaty foods and organic matter\u003c\/p\u003e\n\u003ch3 data-section-id=\"f6aovs\" data-start=\"1243\" data-end=\"1265\"\u003eRecommended Foods:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMysis shrimp\u003c\/li\u003e\n\u003cli\u003eChopped shrimp or clam\u003c\/li\u003e\n\u003cli\u003eSinking carnivore pellets\u003c\/li\u003e\n\u003cli\u003eSmall pieces of seafood\u003c\/li\u003e\n\u003cli\u003eNaturally occurring detritus and biofilm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1405\" data-end=\"1536\"\u003eTarget feeding several times per week is often recommended, especially in cleaner aquariums with limited natural food availability.\u003c\/p\u003e\n\u003ch2 data-section-id=\"18awqjh\" data-start=\"1538\" data-end=\"1567\"\u003eLifespan \u0026amp; Growth Rate\u003c\/h2\u003e\n\u003cp data-start=\"1569\" data-end=\"1629\"\u003e\u003cstrong data-start=\"1569\" data-end=\"1582\"\u003eLifespan:\u003c\/strong\u003e 3–5+ years\u003cbr data-start=\"1593\" data-end=\"1596\"\u003e\u003cstrong data-start=\"1596\" data-end=\"1612\"\u003eGrowth Rate:\u003c\/strong\u003e Slow to Moderate\u003c\/p\u003e\n\u003cp data-start=\"1631\" data-end=\"1759\"\u003eWith stable water quality and consistent feeding, Red Knobby Starfish can maintain healthy tissue and coloration for many years.\u003c\/p\u003e\n\u003ch2 data-section-id=\"t76pnm\" data-start=\"1761\" data-end=\"1795\"\u003eTemperament \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"1797\" data-end=\"1875\"\u003e\u003cstrong data-start=\"1797\" data-end=\"1813\"\u003eTemperament:\u003c\/strong\u003e Peaceful – Slow-moving scavenger\u003cbr data-start=\"1846\" data-end=\"1849\"\u003e\u003cstrong data-start=\"1849\" data-end=\"1863\"\u003eReef Safe?\u003c\/strong\u003e Use Caution\u003c\/p\u003e\n\u003cp data-start=\"1877\" data-end=\"2126\"\u003eRed Knobby Starfish are generally peaceful toward fish but may consume sessile invertebrates, soft corals, sponges, or other slow-moving organisms if underfed. They are often better suited for fish-only systems or carefully monitored reef aquariums.\u003c\/p\u003e\n\u003cp data-start=\"2128\" data-end=\"2250\"\u003eAvoid housing them with triggers, puffers, large wrasses, harlequin shrimp, or other species known to prey on echinoderms.\u003c\/p\u003e\n\u003ch2 data-section-id=\"kdvd6k\" data-start=\"2252\" data-end=\"2293\"\u003eCommon Challenges \u0026amp; Considerations\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1p05d14\" data-start=\"2295\" data-end=\"2330\"\u003eSensitivity to Salinity Changes\u003c\/h3\u003e\n\u003cp data-start=\"2332\" data-end=\"2441\"\u003eRed Knobby Starfish are highly sensitive to rapid changes in salinity and should always be acclimated slowly.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1r2ehy2\" data-start=\"2443\" data-end=\"2462\"\u003eStarvation Risk\u003c\/h3\u003e\n\u003cp data-start=\"2464\" data-end=\"2576\"\u003eIn aquariums without sufficient natural food sources or supplemental feeding, they may slowly decline over time.\u003c\/p\u003e\n\u003ch3 data-section-id=\"gzvm9w\" data-start=\"2578\" data-end=\"2602\"\u003eHandling Sensitivity\u003c\/h3\u003e\n\u003cp data-start=\"2604\" data-end=\"2686\"\u003eExposure to air and rough handling can damage delicate tissue and increase stress.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1aludhk\" data-start=\"2688\" data-end=\"2718\"\u003eLimited Reef Compatibility\u003c\/h3\u003e\n\u003cp data-start=\"2720\" data-end=\"2823\"\u003eSome individuals may disturb or consume sessile invertebrates while scavenging throughout the aquarium.\u003c\/p\u003e\n\u003ch2 data-section-id=\"52w0mo\" data-start=\"2825\" data-end=\"2844\"\u003eWater Conditions\u003c\/h2\u003e\n\u003cp data-start=\"2846\" data-end=\"2952\"\u003e\u003cstrong data-start=\"2846\" data-end=\"2862\"\u003eTemperature:\u003c\/strong\u003e 75–77°F\u003cbr data-start=\"2870\" data-end=\"2873\"\u003e\u003cstrong data-start=\"2873\" data-end=\"2894\"\u003edKH (Alkalinity):\u003c\/strong\u003e 8–9\u003cbr data-start=\"2898\" data-end=\"2901\"\u003e\u003cstrong data-start=\"2901\" data-end=\"2908\"\u003epH:\u003c\/strong\u003e 8.1–8.3\u003cbr data-start=\"2916\" data-end=\"2919\"\u003e\u003cstrong data-start=\"2919\" data-end=\"2940\"\u003eSpecific Gravity:\u003c\/strong\u003e 1.024–1.026\u003c\/p\u003e\n\u003cp data-start=\"2954\" data-end=\"3120\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eStable water chemistry, mature biological filtration, and regular feeding are important for maintaining healthy tissue and long-term success with Red Knobby Starfish.\u003c\/p\u003e","brand":"TSA Inverts","offers":[{"title":"Default Title","offer_id":49117726834986,"sku":"STARxRedKnob","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/tsa-inverts-red-knobby-starfish-1235154565.png?v=1777843541","url":"https:\/\/topshelfaquatics.com\/products\/red-knobby-starfish","provider":"Top Shelf Aquatics ","version":"1.0","type":"link"}