{"product_id":"black-long-spine-urchin","title":"Black Long Spine Urchin","description":"\u003ch1 data-start=\"150\" data-end=\"197\"\u003e\u003cstrong data-start=\"152\" data-end=\"197\"\u003eDiadema setosum – Black Long Spine Urchin\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2 data-start=\"199\" data-end=\"216\"\u003e🔹 Quick Facts\u003c\/h2\u003e\n\u003cul data-start=\"217\" data-end=\"486\"\u003e\n\u003cli data-start=\"217\" data-end=\"259\"\u003e\n\u003cp data-start=\"219\" data-end=\"259\"\u003e\u003cstrong data-start=\"219\" data-end=\"239\"\u003eScientific Name:\u003c\/strong\u003e \u003cem data-start=\"240\" data-end=\"257\"\u003eDiadema setosum\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"260\" data-end=\"304\"\u003e\n\u003cp data-start=\"262\" data-end=\"304\"\u003e\u003cstrong data-start=\"262\" data-end=\"278\"\u003eCommon Name:\u003c\/strong\u003e Black Long Spine Urchin\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"305\" data-end=\"333\"\u003e\n\u003cp data-start=\"307\" data-end=\"333\"\u003e\u003cstrong data-start=\"307\" data-end=\"318\"\u003eFamily:\u003c\/strong\u003e Diadematidae\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"334\" data-end=\"422\"\u003e\n\u003cp data-start=\"336\" data-end=\"422\"\u003e\u003cstrong data-start=\"336\" data-end=\"347\"\u003eOrigin:\u003c\/strong\u003e Indo-Pacific, including Red Sea, Indian Ocean, and Western Pacific reefs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"423\" data-end=\"486\"\u003e\n\u003cp data-start=\"425\" data-end=\"486\"\u003e\u003cstrong data-start=\"425\" data-end=\"439\"\u003eReef Safe:\u003c\/strong\u003e ✔ Yes (with caution – may knock over corals)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"488\" data-end=\"491\"\u003e\n\u003ch2 data-start=\"493\" data-end=\"513\"\u003e🔹 Identification\u003c\/h2\u003e\n\u003cul data-start=\"514\" data-end=\"920\"\u003e\n\u003cli data-start=\"514\" data-end=\"623\"\u003e\n\u003cp data-start=\"516\" data-end=\"623\"\u003eJet black, rounded body with \u003cstrong data-start=\"545\" data-end=\"567\"\u003eneedle-like spines\u003c\/strong\u003e that can reach up to \u003cstrong data-start=\"589\" data-end=\"610\"\u003e30 cm (12 inches)\u003c\/strong\u003e in length.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"624\" data-end=\"699\"\u003e\n\u003cp data-start=\"626\" data-end=\"699\"\u003eOften displays \u003cstrong data-start=\"641\" data-end=\"672\"\u003efive distinctive white dots\u003c\/strong\u003e around the central body.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"700\" data-end=\"821\"\u003e\n\u003cp data-start=\"702\" data-end=\"821\"\u003eHas a bright \u003cstrong data-start=\"715\" data-end=\"754\"\u003eblue or orange ring around the anus\u003c\/strong\u003e – a unique identifying feature compared to other urchin species.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"822\" data-end=\"920\"\u003e\n\u003cp data-start=\"824\" data-end=\"920\"\u003eAt night, tube feet and pedicellariae (tiny claw-like structures) can be seen moving actively.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"922\" data-end=\"925\"\u003e\n\u003ch2 data-start=\"927\" data-end=\"941\"\u003e🔹 Behavior\u003c\/h2\u003e\n\u003cul data-start=\"942\" data-end=\"1244\"\u003e\n\u003cli data-start=\"942\" data-end=\"1033\"\u003e\n\u003cp data-start=\"944\" data-end=\"1033\"\u003e\u003cstrong data-start=\"944\" data-end=\"964\"\u003eNocturnal grazer\u003c\/strong\u003e – hides in crevices during the day and comes out at night to feed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1034\" data-end=\"1091\"\u003e\n\u003cp data-start=\"1036\" data-end=\"1091\"\u003eMoves slowly but is very effective at clearing algae.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1092\" data-end=\"1178\"\u003e\n\u003cp data-start=\"1094\" data-end=\"1178\"\u003eUses its long spines as \u003cstrong data-start=\"1118\" data-end=\"1147\"\u003edefense against predators\u003c\/strong\u003e – fish generally avoid them.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1179\" data-end=\"1244\"\u003e\n\u003cp data-start=\"1181\" data-end=\"1244\"\u003eCan accidentally \u003cstrong data-start=\"1198\" data-end=\"1227\"\u003edislodge rocks and corals\u003c\/strong\u003e when climbing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1246\" data-end=\"1249\"\u003e\n\u003ch2 data-start=\"1251\" data-end=\"1261\"\u003e🔹 Diet\u003c\/h2\u003e\n\u003cul data-start=\"1262\" data-end=\"1577\"\u003e\n\u003cli data-start=\"1262\" data-end=\"1317\"\u003e\n\u003cp data-start=\"1264\" data-end=\"1317\"\u003ePrimary diet: \u003cstrong data-start=\"1278\" data-end=\"1314\"\u003emicroalgae and filamentous algae\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1318\" data-end=\"1397\"\u003e\n\u003cp data-start=\"1320\" data-end=\"1397\"\u003eWill graze on \u003cstrong data-start=\"1334\" data-end=\"1353\"\u003ecoralline algae\u003c\/strong\u003e (sometimes frustrating for reef keepers).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1398\" data-end=\"1496\"\u003e\n\u003cp data-start=\"1400\" data-end=\"1496\"\u003eIf natural algae is lacking, it should be fed \u003cstrong data-start=\"1446\" data-end=\"1493\"\u003edried nori, spirulina, or herbivore pellets\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1497\" data-end=\"1577\"\u003e\n\u003cp data-start=\"1499\" data-end=\"1577\"\u003eA well-fed urchin = better algae control + longer survival in the reef tank.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1579\" data-end=\"1582\"\u003e\n\u003ch2 data-start=\"1584\" data-end=\"1607\"\u003e🔹 Tank Requirements\u003c\/h2\u003e\n\u003cul data-start=\"1608\" data-end=\"1972\"\u003e\n\u003cli data-start=\"1608\" data-end=\"1687\"\u003e\n\u003cp data-start=\"1610\" data-end=\"1687\"\u003e\u003cstrong data-start=\"1610\" data-end=\"1624\"\u003eTank Size:\u003c\/strong\u003e 75 gallons minimum (needs plenty of rock and grazing space).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1688\" data-end=\"1743\"\u003e\n\u003cp data-start=\"1690\" data-end=\"1743\"\u003e\u003cstrong data-start=\"1690\" data-end=\"1703\"\u003eLighting:\u003c\/strong\u003e Not picky – thrives in reef lighting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1744\" data-end=\"1893\"\u003e\n\u003cp data-start=\"1746\" data-end=\"1769\"\u003e\u003cstrong data-start=\"1746\" data-end=\"1767\"\u003eWater Parameters:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1772\" data-end=\"1893\"\u003e\n\u003cli data-start=\"1772\" data-end=\"1796\"\u003e\n\u003cp data-start=\"1774\" data-end=\"1796\"\u003eTemperature: 72–78°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1799\" data-end=\"1824\"\u003e\n\u003cp data-start=\"1801\" data-end=\"1824\"\u003eSalinity: 1.023–1.025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1827\" data-end=\"1842\"\u003e\n\u003cp data-start=\"1829\" data-end=\"1842\"\u003epH: 8.1–8.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1845\" data-end=\"1866\"\u003e\n\u003cp data-start=\"1847\" data-end=\"1866\"\u003eNitrates: \u0026lt;10 ppm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1869\" data-end=\"1893\"\u003e\n\u003cp data-start=\"1871\" data-end=\"1893\"\u003ePhosphates: \u0026lt;0.1 ppm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1894\" data-end=\"1972\"\u003e\n\u003cp data-start=\"1896\" data-end=\"1972\"\u003eNeeds a \u003cstrong data-start=\"1904\" data-end=\"1923\"\u003emature aquarium\u003c\/strong\u003e with stable water and plenty of natural algae.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1974\" data-end=\"1977\"\u003e\n\u003ch2 data-start=\"1979\" data-end=\"2003\"\u003e🔹 Reef Compatibility\u003c\/h2\u003e\n\u003cul data-start=\"2004\" data-end=\"2188\"\u003e\n\u003cli data-start=\"2004\" data-end=\"2046\"\u003e\n\u003cp data-start=\"2006\" data-end=\"2046\"\u003e✔ Safe with corals (does not eat them)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2047\" data-end=\"2091\"\u003e\n\u003cp data-start=\"2049\" data-end=\"2091\"\u003e✔ Safe with fish (most avoid the spines)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2092\" data-end=\"2188\"\u003e\n\u003cp data-start=\"2094\" data-end=\"2188\"\u003e❌ Not safe with predators like triggers, puffers, or large wrasses (they may try to bite it)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2190\" data-end=\"2193\"\u003e\n\u003ch2 data-start=\"2195\" data-end=\"2209\"\u003e🔹 Benefits\u003c\/h2\u003e\n\u003cul data-start=\"2210\" data-end=\"2380\"\u003e\n\u003cli data-start=\"2210\" data-end=\"2261\"\u003e\n\u003cp data-start=\"2212\" data-end=\"2261\"\u003eExcellent \u003cstrong data-start=\"2222\" data-end=\"2239\"\u003ealgae control\u003c\/strong\u003e for reef aquariums.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2262\" data-end=\"2322\"\u003e\n\u003cp data-start=\"2264\" data-end=\"2322\"\u003eAdds unique, exotic movement and appearance to the tank.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2323\" data-end=\"2380\"\u003e\n\u003cp data-start=\"2325\" data-end=\"2380\"\u003eNatural part of the reef ecosystem – creates balance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Saltwater Pros Inc.","offers":[{"title":"Default Title","offer_id":48126949523696,"sku":null,"price":49.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/7482\/5712\/files\/9a2a0ede-0b97-4eb1-b3b5-875043b40e6a.png?v=1759500057","url":"https:\/\/shop.saltwaterreef.ca\/products\/black-long-spine-urchin","provider":"Saltwater Pros Inc.","version":"1.0","type":"link"}