{"product_id":"bicolor-blenny-ecsenius-bicolor-saltwater","title":"Bicolor Blenny (Ecsenius bicolor)","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\u003eBicolor Blenny\u003c\/strong\u003e (\u003cem\u003eEcsenius bicolor\u003c\/em\u003e) is the fish that turns a hole in your rockwork into a face. The front half is a deep slate blue, the back half flares into bright orange, and the two colors meet in the middle like the fish was dipped. It spends its day propped on its pectoral fins scanning the tank, grazing film algae off the rocks, then reversing into a crevice tail first the second something startles it. Hardy, cheap to feed, endlessly watchable, and a genuinely useful algae grazer. Browse the rest of our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater livestock and supplies\u003c\/a\u003e to build the tank around it.\u003c\/p\u003e\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 30 gallons or larger. Blennies do not need swimming room so much as territory and hiding options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRockwork is the whole game:\u003c\/strong\u003e give it mature live rock with plenty of small holes and crevices. A Bicolor Blenny wants two or three back-up bolt holes it can reverse into, and a fish with good cover is a fish you actually see.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater parameters:\u003c\/strong\u003e 72 to 78°F, pH 8.1 to 8.4, salinity 1.020 to 1.025. Undemanding once settled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeeding:\u003c\/strong\u003e mostly herbivorous. Film algae on the rocks is a start but never enough on its own, so feed dried seaweed on a \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/two-little-fishies-veggiemag-magnetic-seaweed-clip\"\u003eVeggieMag clip\u003c\/a\u003e and a marine algae based flake or pellet. An underfed Bicolor is the one that starts sampling coral, so keep the greens coming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLid:\u003c\/strong\u003e required. Blennies are committed jumpers and this one is no exception.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many:\u003c\/strong\u003e one per tank. They are peaceful toward almost everything, but another blenny or a similarly shaped bottom perching fish reads as a rival.\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003eScientific name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cem\u003eEcsenius bicolor\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\u003eCommon names\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eBicolor Blenny, Two-Colored Blenny, Flame Tail Blenny\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;\"\u003eBlenniidae, the combtooth blennies\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;\"\u003eBeginner\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, territorial only toward other blennies\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, with caution. A hungry one may nip clam mantles or LPS polyps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eMax size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eAbout 4 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;\"\u003e30 gallons\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;\"\u003e72 to 78°F\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\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\u003eDiet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eHerbivore, grazes algae and needs supplemental greens\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 reefs, from the Maldives east to the western Pacific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003ePickup\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eIn-store pickup at Squeaky's Aquatics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\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\u003ePeaceful with the general community and a good fit alongside the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/ocellaris-clownfish-amphiprion-ocellaris-saltwater\"\u003eOcellaris Clownfish\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/black-ice-longfin-clownfish-amphiprion-ocellaris-saltwater\"\u003eBlack Ice Longfin Clownfish\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/royal-gramma-gramma-loreto-saltwater\"\u003eRoyal Gramma\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/banggai-cardinal-pterapogon-kaudernii-saltwater-reef\"\u003eBanggai Cardinal\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/blue-green-chromis-chromis-viridis-saltwater\"\u003eBlue Green Chromis\u003c\/a\u003e, and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/firefish-goby-nemateleotris-magnifica-saltwater\"\u003eFirefish Goby\u003c\/a\u003e. Inverts are completely safe, including the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/scarlet-skunk-cleaner-shrimp-lysmata-amboinensis-saltwater\"\u003eScarlet Skunk Cleaner Shrimp\u003c\/a\u003e and the rest of your cleanup crew.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOne blenny per tank.\u003c\/strong\u003e This is the main rule. Our \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/tailspot-blenny-ecsenius-stigmatura-saltwater\"\u003eTailspot Blenny\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/midas-blenny-ecsenius-midas-saltwater-reef-safe\"\u003eMidas Blenny\u003c\/a\u003e, \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/canary-blenny-meiacanthus-oualanensis-saltwater\"\u003eCanary Blenny\u003c\/a\u003e, and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/lawnmower-blenny-salarias-fasciatus-saltwater\"\u003eLawnmower Blenny\u003c\/a\u003e are all great fish, but treat them as alternatives to this one rather than additions to it. Two blennies competing for the same perches in the same rockwork rarely ends well outside a very large system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe coral caveat.\u003c\/strong\u003e Bicolors are usually model reef citizens, but a few individuals develop a taste for clam mantles or fleshy LPS. Keeping them well fed on greens is the single best prevention, and it is worth watching a new one for the first couple of weeks in a tank with clams.\u003c\/p\u003e\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 with a \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/two-little-fishies-veggiemag-magnetic-seaweed-clip\"\u003eVeggieMag clip\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/ocean-nutrition-green-marine-algae\"\u003eOcean Nutrition Green Marine Algae\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/vitalis-marine-grazing-pellets-saltwater-fish-food\"\u003eVitalis Marine Grazing Pellets\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hikari-seaweed-extreme\"\u003eHikari Seaweed Extreme\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/piscine-energetics-pe-mysis\"\u003ePiscine Energetics PE Mysis\u003c\/a\u003e as an occasional treat\u003c\/li\u003e\n\u003c\/ul\u003e\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 clear my algae?\u003c\/strong\u003e\u003cbr\u003eIt will graze film algae off rock and glass all day, which is genuinely useful, but it is not a hair algae solution and it will not replace a proper cleanup crew. Think of it as steady maintenance rather than a cure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMine changed color. Is something wrong?\u003c\/strong\u003e\u003cbr\u003eAlmost certainly not. Bicolor Blennies shift shade with mood, and a fish can go from bright orange and blue to washed out grey and back within minutes. Rapid color change is normal blenny behavior, not a symptom.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does it keep hiding?\u003c\/strong\u003e\u003cbr\u003eBecause that is the job description. A new Bicolor spends its first days mostly inside a hole, peeking out. Once it decides the tank is safe it will spend more and more time out on the rocks, and it learns feeding time quickly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe with my corals?\u003c\/strong\u003e\u003cbr\u003eFor the large majority of them, yes. The exceptions are clam mantles and fleshy LPS, which a small number of individuals decide to sample. Feed plenty of seaweed and greens and the risk drops off sharply.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Squeaky's Aquatics","offers":[{"title":"Default Title","offer_id":49012426866907,"sku":"FBLBI155AA-0","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/images_1_182eb906-545b-4112-8140-59d7fa935b12.jpg?v=1784878815","url":"https:\/\/squeakysaquatics.com\/products\/bicolor-blenny-ecsenius-bicolor-saltwater","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}