{"id":11656,"date":"2026-02-17T22:58:43","date_gmt":"2026-02-17T22:58:43","guid":{"rendered":"https:\/\/aquadistribution.co.uk\/product\/red-pencil-sea-urchin-heterocentrotus-mammillatus\/"},"modified":"2026-02-17T22:58:43","modified_gmt":"2026-02-17T22:58:43","slug":"red-pencil-sea-urchin-heterocentrotus-mammillatus","status":"publish","type":"product","link":"https:\/\/aquadistribution.co.uk\/?product=red-pencil-sea-urchin-heterocentrotus-mammillatus","title":{"rendered":"Red Pencil Sea Urchin Heterocentrotus Mammillatus"},"content":{"rendered":"

Red Pencil Sea Urchin \u2013 Heterocentrotus mammillatus<\/em><\/h3>\n

Overview:<\/strong>
The Red Pencil Sea Urchin<\/strong> is a striking and unique urchin, instantly recognizable by its thick, bright red spines<\/strong> resembling pencils. More ornamental than functional, it adds a bold splash of color and texture to aquariums.<\/p>\n

Origin:<\/strong>
Native to the Indo-Pacific<\/strong>, often found in rocky reef areas exposed to strong surge zones.<\/p>\n

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Feeding:<\/strong><\/p>\n

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    Feeds on algae, biofilm, and detritus<\/strong>.<\/p>\n<\/li>\n

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    Supplement diet with dried seaweed, algae wafers, or fresh macroalgae<\/strong> if natural algae growth is limited.<\/p>\n<\/li>\n<\/ul>\n

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    Tank Mates:<\/strong><\/p>\n

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      Reef-safe<\/strong>, but its size and strength mean it can dislodge corals or rockwork.<\/p>\n<\/li>\n

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      Avoid with predatory fish such as puffers and triggers.<\/p>\n<\/li>\n<\/ul>\n

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      Aggression Level:<\/strong>
      Peaceful.<\/strong> Will not bother tank mates but may inadvertently shift d\u00e9cor while moving.<\/p>\n

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      Experience Level:<\/strong>
      Intermediate.<\/strong> Requires stable, well-established aquariums with ample algae and strong rockwork.<\/p>\n

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      Water Parameters:<\/strong><\/p>\n

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        Temperature: 72\u201378\u00b0F (22\u201326\u00b0C)<\/strong><\/p>\n<\/li>\n

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        pH: 8.1\u20138.4<\/strong><\/p>\n<\/li>\n

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        Salinity: 1.023\u20131.025<\/strong><\/p>\n<\/li>\n

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        Tank Size: 75+ gallons<\/strong><\/p>\n<\/li>\n<\/ul>\n

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        Unique Features:<\/strong><\/p>\n

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          Iconic thick red spines<\/strong> for a dramatic display.<\/p>\n<\/li>\n

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          Long-lived and hardy in stable reef systems.<\/p>\n<\/li>\n

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          Excellent at helping control algae, though slower than other urchins.<\/p>\n<\/li>\n<\/ul>\n

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          \u2728 The Red Pencil Sea Urchin<\/strong> is both a conversation piece and functional grazer<\/strong>, perfect for large, established reef tanks.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Red Pencil Sea Urchin \u2013 Heterocentrotus mammillatus Overview:The Red Pencil Sea Urchin is a striking and unique urchin, instantly recognizable by its thick, bright red spines resembling pencils. More ornamental than functional, it adds a bold splash of color and texture to aquariums. Origin:Native to the Indo-Pacific, often found in rocky reef areas exposed to […]<\/p>\n","protected":false},"featured_media":11655,"template":"","meta":[],"product_brand":[],"product_cat":[79],"product_tag":[],"class_list":{"0":"post-11656","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-urchins","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"group_of_quantity":0,"min_quantity":0,"max_quantity":"","exclude_order_quantity_value_rules":"no","exclude_category_quantity_rules":"no","combine_variations":"no","exclude_global_add_ons":[],"addons":[],"_links":{"self":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/product\/11656","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/media\/11655"}],"wp:attachment":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11656"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=11656"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=11656"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=11656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}