{"product_id":"blue-eye-tang-ctenochaetus-binotatus-saltwater","title":"Blue Eye Tang (Ctenochaetus binotatus)","description":"\u003cdiv style=\"font-family:Georgia,serif;color:#1a1a1a;max-width:860px;line-height:1.7;\"\u003e\n\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 Your 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\u003eThe \u003cstrong\u003eBlue Eye Tang\u003c\/strong\u003e (\u003cem\u003eCtenochaetus binotatus\u003c\/em\u003e), also called the Two Spot Bristletooth, is a calm, hard-working grazer with a bright blue ring around each eye and a black spot at the back of the dorsal and anal fins. Its comb-like bristle teeth scrape the thin film of algae and detritus off rock and glass all day, which makes it one of the more useful tangs for a reef. It is peaceful with most fish and easier going than many tangs, but it still grows to about 8.5 inches and needs real swimming room. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater fish and supplies\u003c\/a\u003e.\u003c\/p\u003e\n\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\u003eTank size:\u003c\/strong\u003e starts in a 50 gallon (a 4 foot tank), plan on 70 gallons or more as it grows. Length matters more than height: tangs cruise the whole tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstablished tank:\u003c\/strong\u003e it grazes film algae and diatoms rather than hair algae, so it does best in a mature tank with plenty of rock to work over. A brand new, spotless tank leaves it hungry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e a grazing herbivore. Offer dried seaweed on a clip most days, plus a quality marine pellet or flake with algae in it, and frozen spirulina mysis or brine as a treat. Feed small amounts two or three times a day; a thin tang is a hungry tang.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e peaceful with most fish, but keep one bristletooth tang per tank. It will chase another \u003cem\u003eCtenochaetus\u003c\/em\u003e (Kole, Tomini) and similar-shaped tangs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater:\u003c\/strong\u003e 74 to 82°F, salinity 1.020 to 1.025, pH 8.1 to 8.4. Stable conditions and good flow keep it comfortable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHealth:\u003c\/strong\u003e like all tangs it is prone to ich and lateral line erosion when stressed or underfed. Steady water quality, plenty of greens and a calm tank are the best prevention.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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%;max-width:640px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eCommon names\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eBlue Eye Tang, Two Spot Bristletooth Tang, Twospot Surgeonfish\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\u003eCtenochaetus binotatus\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\u003eFamily\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eAcanthuridae (surgeonfish and tangs)\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, East Africa to the Tuamotus\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; one bristletooth tang per tank\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;\"\u003eAbout 8.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eMinimum tank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e50 gallons to start, 70 or more as it grows\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, leaves corals and invertebrates alone\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;\"\u003eHerbivore, grazes film algae and detritus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e74 to 82°F\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;\"\u003e1.020 to 1.025\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 to 8.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSaltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\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\u003eA good fit with clownfish, gobies, blennies, cardinals, chromis, wrasses and dwarf angels, and safe with corals, shrimp, snails and crabs. It gets along with most tangs of a different shape in a large enough tank, and is often the calm tang that settles into an existing group.\u003c\/p\u003e\n\u003cp\u003eWhere it goes wrong: two bristletooth tangs (two Blue Eyes, or a Blue Eye with a Kole or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/flame-fin-tomini-tang-ctenochaetus-tominiensis-saltwater\"\u003eFlame Fin Tomini\u003c\/a\u003e) usually fight, and so can a tang added to a tank that is too small for both. If you plan more than one tang, add them at the same time into 100 gallons or more, choose different body shapes, and keep plenty of rockwork to break up sight lines.\u003c\/p\u003e\n\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\/tlf-seaveggies-green-seaweed\"\u003eTwo Little Fishies SeaVeggies Green Seaweed\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/rods-food-three-weed-blend-30g-seaweed-tangs\"\u003eRod's Food Three Weed Blend\u003c\/a\u003e as daily greens\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/two-little-fishies-veggiemag-magnetic-seaweed-clip\"\u003eTwo Little Fishies VeggieMag\u003c\/a\u003e to hold the seaweed in place\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/vitalis-marine-grazing-pellets-saltwater-fish-food\"\u003eVitalis Marine Grazing Pellets\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hikari-seaweed-extreme\"\u003eHikari Seaweed Extreme\u003c\/a\u003e for an algae-based staple\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hikari-bio-pure-frozen-spirulina-mysis-shrimp\"\u003eHikari Bio-Pure Frozen Spirulina Mysis\u003c\/a\u003e as a treat a few times a week\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003eWill it eat my hair algae?\u003c\/strong\u003e\u003cbr\u003eNot much. Bristletooth tangs comb the short film of algae and diatoms off surfaces. For hair algae a \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/scopas-tang-zebrasoma-scopas-saltwater\"\u003eScopas\u003c\/a\u003e or Yellow Tang, or a cleanup crew, does more.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size tank does it really need?\u003c\/strong\u003e\u003cbr\u003eA 50 gallon, 4 foot tank is a fine start for a young fish. It grows to about 8.5 inches, so plan on 70 gallons or more long term, and bigger if it will share the tank with other tangs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it reef safe?\u003c\/strong\u003e\u003cbr\u003eYes. It grazes rock and glass and leaves corals, clams, shrimp and snails alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I keep two?\u003c\/strong\u003e\u003cbr\u003eNot two bristletooth tangs. It usually does fine with one tang of a different shape in 100 gallons or more when both are added together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is its color dull or why does it look thin?\u003c\/strong\u003e\u003cbr\u003eUsually diet or stress. Offer seaweed every day plus an algae pellet, keep the water stable, and give it time to settle in. Most look brighter and fuller within a few weeks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy the name Blue Eye?\u003c\/strong\u003e\u003cbr\u003eThe bright blue ring around each eye. The two black spots at the back of the dorsal and anal fins give it its other name, Two Spot Bristletooth.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Squeaky's Aquatics","offers":[{"title":"Default Title","offer_id":48252094775515,"sku":"FTABL750AA-3","price":67.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image-coming-soon-shopify.png?v=1789636111","url":"https:\/\/squeakysaquatics.com\/products\/blue-eye-tang-ctenochaetus-binotatus-saltwater","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}