{"product_id":"fan-belly-leatherjacket-filefish","title":"Fan Belly Leatherjacket Filefish","description":"\u003cp\u003e\u003cspan\u003eThe Fan Belly Leatherjacket Filefish (\u003c\/span\u003e\u003cem\u003e\u003cspan\u003eMonacanthus chinensis\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e) has a flattened body, prominent lower profile, and textured skin patterned in variable tan, brown, olive, and darker markings. Its coloration blends with nearby surfaces, and its slow movements add to the impression of drifting vegetation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNative to the Indo-West Pacific, it occupies coastal habitats with vegetation, rubble, and other cover. It searches surfaces for a mixture of plant and animal foods. An aquarium should offer both grazing opportunities and secure retreats without restricting the movements of a large adult.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is not a six-inch species: adults can reach approximately 15 inches. Its eventual size and feeding load require a spacious, established display. Peaceful companions and reliable access to a varied diet are more important than surrounding it with equally large but aggressive fish.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eQuick Care Guide\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCare Level:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Moderate\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eMinimum Tank Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 150 Gallons\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eAdult Size:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Up to 15 inches (38 cm)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eTemperament:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Peaceful\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDiet:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Omnivore\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eReef Safe:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e No\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eRegion:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Indo-West Pacific\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eScientific Name:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eMonacanthus chinensis\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTank Requirements\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eProvide a mature aquarium of at least 150 gallons for adult housing. Allow for an adult reaching 15 inches (38 cm), and consider the usable footprint rather than the gallon rating alone. The fish needs room to turn, reach shelter, and feed without repeated close encounters with tankmates.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUse at least 150 gallons for adult housing, with substantial width and long, clear routes around the rockwork. Account for its deep profile when choosing shelter openings and the spacing between decorations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eVegetation or suitable macroalgae can provide additional cover and grazing surfaces, but should not occupy all open water. Leave the base of the aquascape accessible for cleaning after meals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eArrange stable rockwork with protected retreats and clear routes between them. Maintain access for inspecting the fish and removing food fragments. Support heavy structures securely and avoid sharp projections along frequently used swimming paths.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProvide good oxygenation and effective biological and mechanical filtration while retaining calm areas. Gentle to moderate, distributed circulation is preferable to directing a powerful jet through its only resting or feeding location.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFit a secure cover and protect equipment intakes.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Close gaps around plumbing and overflows. Establish a calm introduction routine and avoid repeatedly chasing the fish out of shelter to make it visible.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDiet and Feeding\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eOffer both marine algae-based foods and finely sized animal foods. Suitable plant-containing preparations can be presented where the fish can browse without competing with faster tankmates.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRotate mysis, enriched brine shrimp, chopped clam or shrimp, and balanced marine omnivore foods. Introduce prepared foods while maintaining those it accepts reliably; an unfamiliar pellet is not a complete feeding plan for a fish that will not eat it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRotate foods with appropriate size and texture. Practical options include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan\u003eMysis shrimp\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan\u003eEnriched brine shrimp as part of a varied diet\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan\u003eFinely chopped marine shrimp, clam, or mussel\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan\u003eSmall pieces of squid\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan\u003eQuality frozen marine omnivore preparations\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan\u003eMarine algae-based foods and accepted pellets\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eOffer small portions two or three times daily, adjusting the total amount to body condition and observed intake. Distribute food across more than one location if companions intercept it, and give a new arrival time to feed close to cover.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWatch for actual swallowing rather than assuming that movement toward food means a successful meal. A fish that repeatedly mouths and rejects food may still be underfed. Maintain accepted foods while introducing variety gradually.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRemove leftovers before they break down among the rocks. Mature grazing surfaces add opportunities to explore, but they do not replace a deliberate feeding routine or regular checks of body condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTemperament and Tankmates\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis filefish is generally peaceful toward unrelated fish, but can become territorial toward its own kind or other filefish sharing the same shelter. Calm behavior does not make it immune to harassment or prevent occasional investigative nipping.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eChoose calm, non-nipping companions that allow it to reach food and resting places without being pursued. Peaceful community fish may be suitable when their adult sizes, water requirements, and feeding habits are compatible; no species list guarantees success with every individual.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvoid highly aggressive triggers, persistent fin nippers, and unusually competitive feeders. A fish that remains confined to one corner, misses meals, or hides continuously to avoid pursuit is not successfully coexisting simply because serious injuries are absent.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKeep one specimen in a typical aquarium. Multiple filefish can compete for the same feeding surfaces and retreats, and an untested pair should not be assumed compatible because the individuals are small or appear quiet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eObserve introductions and reassess behavior as the fish settles in. Separated feeding locations and visual barriers can reduce mild competition, but persistent chasing, fin damage, or exclusion from food requires separation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eReef Compatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNot reef safe.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Coral and invertebrate compatibility must be assessed separately from its temperament toward other fish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNatural picking can be directed at corals, sponges, mollusks, worms, and ornamental crustaceans. Exposed tissue and small cleanup animals should not be assumed safe simply because the fish is otherwise calm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA spacious fish-only aquarium allows its omnivorous feeding habits to be managed without depending on the survival of an ornamental reef community. Regular meals cannot remove its interest in browsing other living surfaces.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlan the display around the animals that need protection before introducing the filefish. A brief period without visible damage is not evidence that feeding preferences will remain unchanged, and frequent meals cannot guarantee the safety of ornamental livestock.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eWater Parameters\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTemperature:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 72–78°F\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eSpecific Gravity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1.024–1.026\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003epH:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8.1–8.4\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eAlkalinity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8–12 dKH\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMaintain stable, well-oxygenated marine water with an established biological filter. Ammonia and nitrite should remain undetectable, and routine testing should guide water changes and nutrient export.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCheck salinity with a calibrated instrument, replace evaporated water with freshwater, and match replacement saltwater carefully. Avoid abrupt changes in temperature, salinity, or pH during maintenance or transfers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFrequent small meals require reliable cleanup of uneaten food. Observe appetite, respiration, and body condition alongside test results; clear water alone does not demonstrate that the fish is receiving suitable care.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCommon Considerations\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAdult Housing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Plan for a 15-inch adult and at least 150 gallons; the small size of a new arrival is temporary.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAdult Space:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Allow for 15 inches (38 cm) and at least 150 gallons, with appropriate swimming and turning room.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFeeding Verification:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Confirm food is swallowed and monitor body condition, particularly during acclimation.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompatible Companions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Protect this deliberate feeder from repeated chasing, fin nipping, and competition at meals.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eReef Risk:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Corals and exposed invertebrates may be eaten or damaged; regular feeding does not guarantee their protection.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCareful Handling:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The dorsal spine and textured skin can snag in fine mesh. Use a suitable container for transfers when practical, avoid chasing, and never pull an entangled fish forcibly free.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TSA Fish","offers":[{"title":"Standard \/ S (1.1-1.5\")","offer_id":50936650694954,"sku":"FILxFanS","price":68.99,"currency_code":"USD","in_stock":false},{"title":"Standard \/ SM (1.6-2\")","offer_id":53484967821610,"sku":"FILxFanSM","price":89.99,"currency_code":"USD","in_stock":false},{"title":"Standard \/ M (2.1-2.5\")","offer_id":53484967854378,"sku":"FILxFanM","price":110.99,"currency_code":"USD","in_stock":false},{"title":"Standard \/ ML (2.6-3\")","offer_id":53484967887146,"sku":"FILxFanML","price":134.99,"currency_code":"USD","in_stock":false},{"title":"Standard \/ L (3.1-3.5\")","offer_id":53484967919914,"sku":"FILxFanL","price":158.99,"currency_code":"USD","in_stock":false},{"title":"Standard \/ XL (3.6-4\")","offer_id":53484967952682,"sku":"FILxFanX","price":182.99,"currency_code":"USD","in_stock":false},{"title":"Aussie \/ S (1.1-1.5\")","offer_id":53484971753770,"sku":"FILxAFanS","price":269.99,"currency_code":"USD","in_stock":false},{"title":"Aussie \/ SM (1.6-2\")","offer_id":53484971786538,"sku":"FILxAFanSM","price":284.99,"currency_code":"USD","in_stock":false},{"title":"Aussie \/ M (2.1-2.5\")","offer_id":53484971819306,"sku":"FILxAFanM","price":299.99,"currency_code":"USD","in_stock":false},{"title":"Aussie \/ ML (2.6-3\")","offer_id":53484971852074,"sku":"FILxAFanML","price":314.99,"currency_code":"USD","in_stock":false},{"title":"Aussie \/ L (3.1-3.5\")","offer_id":53484971884842,"sku":"FILxAFanL","price":374.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/tsa-fish-fan-belly-leatherjacket-filefish-1257022184.jpg?v=1788501224","url":"https:\/\/topshelfaquatics.com\/products\/fan-belly-leatherjacket-filefish","provider":"Top Shelf Aquatics","version":"1.0","type":"link"}