{"product_id":"gold-rim-tang","title":"Gold Rim Tang","description":"\u003ch2\u003eGold Rim Tang\u003c\/h2\u003e\n\u003cdiv style=\"background:#f6f8f9; border:1px solid #dde4e7; border-left:4px solid #8a98a0; border-radius:8px; padding:8px 12px; font-size:13px; color:#607078; line-height:1.5; margin: 10px 0;\"\u003e\n\u003cstrong style=\"color:#46545b;\"\u003eNote:\u003c\/strong\u003e This is a general description of the species — the specific specimen you receive may vary in color, size, and appearance.\u003c\/div\u003e\n\u003cp\u003eThe Gold Rim Tang (\u003cem\u003eAcanthurus nigricans\u003c\/em\u003e) — also called the Whitecheek Tang, Powder Grey Tang, or Goldrim Surgeonfish — is one of the most striking, coveted, and instantly recognizable specialty tangs in the entire saltwater hobby. \u003cstrong\u003eA deep chocolate-brown to black body is dramatically outlined by a signature vibrant gold rim running along the dorsal and anal fins, accented by a sharp white cheek patch beneath the eye, a narrow white band nearly encircling the mouth, electric blue-tipped pectoral fins, and a striking white tail with a distinctive yellow vertical bar\u003c\/strong\u003e — creating one of the most photogenic and immediately recognizable tang silhouettes in the entire marine trade. Not to be confused with the more commonly available Powder Brown Tang (\u003cem\u003eAcanthurus japonicus\u003c\/em\u003e), which is a related but distinct species with lighter body coloration and different facial markings, the true Gold Rim Tang delivers unmatched color contrast between its dark body and glowing gold fin margins.\u003c\/p\u003e\n\u003cp\u003eWhat makes the Gold Rim Tang such a coveted specialty tang is the combination of extraordinary visual impact, active grazing behavior, and the distinctive appearance that separates it from every other tang species in the trade. \u003cstrong\u003eGold Rim Tangs are constantly active algae grazers that patrol live rock throughout the day consuming film algae, hair algae, and other nuisance growths — one of the most productive natural algae controllers for larger reef displays with sufficient tank size and swimming space to support the species long-term\u003c\/strong\u003e. The vibrant gold fin rims catch light dramatically as the fish moves through the water, and the sharp contrast against the dark body makes this species one of the most striking additions available to any established mixed reef or fish-only display.\u003c\/p\u003e\n\u003cp\u003eThe Gold Rim Tang is an advanced-care specialty tang that requires an established reef aquarium with excellent water quality, stable parameters, and adequate swimming space — this is not a beginner-friendly tang and is not suitable for smaller tanks or new marine systems. \u003cstrong\u003eGold Rim Tangs are notably more susceptible to marine ich (Cryptocaryon irritans) than most tangs, are stress-sensitive during shipping and acclimation, and require a minimum tank size of 100 to 125 gallons with strong filtration, high oxygenation, and stable water chemistry to thrive long-term\u003c\/strong\u003e. For serious specialist reefers with large established display tanks, quality herbivore feeding routines, appropriate quarantine practices, and the commitment to advanced tang care, the Gold Rim Tang delivers one of the most visually stunning specialty tangs available in the entire saltwater trade.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color:#1a5a61;\"\u003eAvailable Options\u003c\/h3\u003e\n\u003cdiv style=\"background: linear-gradient(180deg,#f6fbf8 0%, #edf7f2 100%); border: 1px solid #d4e6e3; border-radius: 12px; padding: 13px 15px;\"\u003e\n  \u003cp style=\"color:#1a5a61; margin-bottom:6px;\"\u003e\u003cstrong\u003e1 Gold Rim Tang — 4 to 5 Inches\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eOne healthy Gold Rim Tang (\u003cem\u003eAcanthurus nigricans\u003c\/em\u003e) — approximately 4 to 5 inches in size\u003c\/li\u003e\n    \u003cli\u003eDeep chocolate-brown to black body with signature vibrant gold rim along dorsal and anal fins\u003c\/li\u003e\n    \u003cli\u003eSharp white cheek patch, white tail with yellow bar, and electric blue-tipped fins\u003c\/li\u003e\n    \u003cli\u003eActive algae grazer for larger established reef or fish-only display systems\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3 style=\"color:#184f69;\"\u003eCare Information\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:separate; border-spacing:10px 10px;\"\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"width:50%; background:#eceff1; border:1px solid #cfd6da; border-radius:10px; padding:11px 13px; color:#22323a; vertical-align:top;\"\u003e🌡️ \u003cstrong style=\"color:#435760;\"\u003eTemperature\u003c\/strong\u003e\u003cbr\u003e72–78°F (22–26°C)\u003c\/td\u003e\n    \u003ctd style=\"width:50%; background:#eceff1; border:1px solid #cfd6da; border-radius:10px; padding:11px 13px; color:#22323a; vertical-align:top;\"\u003e🧂 \u003cstrong style=\"color:#435760;\"\u003eSalinity\u003c\/strong\u003e\u003cbr\u003e1.023–1.026 — stable parameters critical\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"background:#eceff1; border:1px solid #cfd6da; border-radius:10px; padding:11px 13px; color:#22323a; vertical-align:top;\"\u003e🏠 \u003cstrong style=\"color:#435760;\"\u003eTank Size\u003c\/strong\u003e\u003cbr\u003e100+ gallons minimum, 125+ recommended for adult\u003c\/td\u003e\n    \u003ctd style=\"background:#eceff1; border:1px solid #cfd6da; border-radius:10px; padding:11px 13px; color:#22323a; vertical-align:top;\"\u003e🍽️ \u003cstrong style=\"color:#435760;\"\u003eDiet\u003c\/strong\u003e\u003cbr\u003eHerbivore — nori\/seaweed sheets essential, multiple daily feedings\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"background:#eceff1; border:1px solid #cfd6da; border-radius:10px; padding:11px 13px; color:#22323a; vertical-align:top;\"\u003e🐠 \u003cstrong style=\"color:#435760;\"\u003eTemperament\u003c\/strong\u003e\u003cbr\u003eSemi-aggressive — one Acanthurus tang per tank generally recommended\u003c\/td\u003e\n    \u003ctd style=\"background:#eceff1; border:1px solid #cfd6da; border-radius:10px; padding:11px 13px; color:#22323a; vertical-align:top;\"\u003e⚙️ \u003cstrong style=\"color:#435760;\"\u003eCare Level\u003c\/strong\u003e\u003cbr\u003eAdvanced — ich-susceptible, established systems only\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3 style=\"color:#6a6b58;\"\u003eSpecial Considerations\u003c\/h3\u003e\n\u003cdiv style=\"background:#faf8ee; border:1px solid #e6e1c9; border-left:4px solid #b7ad78; border-radius:10px; padding:13px 15px; color:#22323a;\"\u003e\n  \u003cstrong\u003eGold Rim Tangs are notably more susceptible to marine ich (Cryptocaryon irritans) than most other tang species — quarantine and observation in a hospital tank for a minimum of 4 weeks before display tank introduction is strongly recommended, and buyers should have proven ich treatment protocols available if needed.\u003c\/strong\u003e Gold Rim Tangs are also more stress-sensitive during shipping and acclimation than most marine fish — slow drip acclimation over 1 to 2 hours is essential, and the fish may take days to weeks to fully adjust to a new system before beginning to eat consistently. Provide a minimum tank size of 100 gallons with 125+ gallons recommended for adult specimens, with strong filtration, high oxygenation from adequate surface agitation, and open swimming space along the length of the tank. Feed multiple times per day with a rotating herbivore diet including dried nori or seaweed sheets attached to the glass with a veggie clip (essential — this is the foundation of Gold Rim Tang nutrition), supplemented with marine-based frozen foods including mysis, brine shrimp, and prepared herbivore mixes. Gold Rim Tangs are semi-aggressive with other tangs and generally should not be housed with other Acanthurus species (including Powder Brown, Powder Blue, or same-genus tangs) unless the display tank is very large (200+ gallons) and multiple tangs are introduced simultaneously. The Gold Rim Tang has a sharp retractable caudal spine (the \"scalpel\") on either side of the tail base — handle with extreme care during netting or acclimation as this spine can cause deep lacerations to human handlers and to other fish. Gold Rim Tangs are completely reef-safe and will not harm corals or invertebrates.\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3 style=\"color:#123844;\"\u003e🔍 Aquarium Insights\u003c\/h3\u003e\n\u003cp\u003eThe Gold Rim Tang is one of the most visually distinctive advanced specialty tangs available to reef keepers:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDeep chocolate-brown to black body with signature vibrant gold rim on dorsal and anal fins — one of the most striking tang silhouettes in the entire marine trade\u003c\/li\u003e\n  \u003cli\u003eActive algae grazer that patrols live rock throughout the day consuming nuisance algae — one of the most productive natural algae controllers for larger reef displays\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eAn advanced-care specialty tang for established reef displays with proven husbandry — the kind of showpiece specimen serious reef keepers build a large mixed reef around, requiring quarantine protocols, established systems, and 100+ gallon tank size for long-term success\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color:#123844;\"\u003eLearn More\u003c\/h3\u003e\n\u003cp style=\"margin-bottom:0;\"\u003eFor detailed species information, compatibility, and care tips, visit our \u003cstrong\u003e\u003ca href=\"https:\/\/www.macroalgaefarms.com\/pages\/species-library\" style=\"color:#1d5c78;\"\u003eSpecies Library\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr style=\"margin:24px 0;\"\u003e\n\u003cdiv style=\"background:#f6f8f9; border:1px solid #dde4e7; border-left:4px solid #8a98a0; border-radius:10px; padding:13px 15px; font-size:13px; color:#607078; line-height:1.65;\"\u003e\n  \u003cstrong style=\"color:#46545b;\"\u003eLivestock Disclaimer\u003c\/strong\u003e\n  \u003cp style=\"margin:8px 0 10px;\"\u003eDue to natural variation, the Gold Rim Tang you receive will be approximately 4 to 5 inches in size and may vary slightly in exact color intensity, gold rim saturation, and body markings. Specific size and coloration cannot be guaranteed and are determined at packing time.\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 10px;\"\u003ePhotographs are representative examples. Individual specimens may vary in size, color intensity, and marking clarity.\u003c\/p\u003e\n  \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eGold Rim Tangs are notably susceptible to marine ich and are stress-sensitive during acclimation — quarantine is strongly recommended and this species is best suited to advanced reefers with established 100+ gallon systems.\u003c\/strong\u003e As with all live animals, proper acclimation and a suitable, established environment are essential for best results.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Macroalgae Farms","offers":[{"title":"4-5\"","offer_id":49636391944451,"sku":null,"price":261.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/7151\/7699\/files\/hf_20260915_190554_9b83fbc2-7038-47b3-a1e4-a1a2ae348ffe_1.jpg?v=1789604478","url":"https:\/\/www.macroalgaefarms.com\/products\/gold-rim-tang","provider":"Macroalgae Farms","version":"1.0","type":"link"}