{"product_id":"big-eye-mandarin-fish-siniperca-kneri-copy","title":"Slender Mandarin Perch (siniperca roulei)","description":"\u003cp data-start=\"232\" data-end=\"539\"\u003e\u003cem data-start=\"232\" data-end=\"250\"\u003eSiniperca roulei\u003c\/em\u003e is one of the rarest members of the Chinese perch family, highly prized by collectors for its unique patterning and elusive nature in the aquarium trade. Like its relatives, this species is a stealth-based ambush predator—using camouflage and patience to strike prey with explosive speed.\u003c\/p\u003e\n\u003cp data-start=\"541\" data-end=\"711\"\u003eRarely seen compared to \u003cem data-start=\"565\" data-end=\"577\"\u003eS. chuatsi\u003c\/em\u003e or \u003cem data-start=\"581\" data-end=\"591\"\u003eS. kneri\u003c\/em\u003e, this species is perfect for advanced hobbyists looking to own something truly uncommon in the Asian predator category.\u003c\/p\u003e\n\u003chr data-start=\"713\" data-end=\"716\"\u003e\n\u003ch3 data-section-id=\"1jusaon\" data-start=\"718\" data-end=\"734\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"722\" data-end=\"734\"\u003eMax Size\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"735\" data-end=\"798\"\u003e\n\u003cli data-section-id=\"1d3i0e8\" data-start=\"735\" data-end=\"767\"\u003e\n\u003cstrong data-start=\"737\" data-end=\"752\"\u003e8–12 inches\u003c\/strong\u003e in captivity\u003c\/li\u003e\n\u003cli data-section-id=\"1n36nii\" data-start=\"768\" data-end=\"798\"\u003eCompact, muscular predator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"800\" data-end=\"803\"\u003e\n\u003ch3 data-section-id=\"1hw2s0j\" data-start=\"805\" data-end=\"822\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"809\" data-end=\"822\"\u003eTank Size\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"823\" data-end=\"958\"\u003e\n\u003cli data-section-id=\"vexzoi\" data-start=\"823\" data-end=\"864\"\u003e\n\u003cstrong data-start=\"825\" data-end=\"837\"\u003eMinimum:\u003c\/strong\u003e 55–75 gallons (juvenile)\u003c\/li\u003e\n\u003cli data-section-id=\"1ggzdkc\" data-start=\"865\" data-end=\"913\"\u003e\n\u003cstrong data-start=\"867\" data-end=\"883\"\u003eRecommended:\u003c\/strong\u003e 100–125+ gallons for adults\u003c\/li\u003e\n\u003cli data-section-id=\"1634zdh\" data-start=\"914\" data-end=\"958\"\u003eProvide structure with open ambush zones\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"960\" data-end=\"963\"\u003e\n\u003ch3 data-section-id=\"swpufs\" data-start=\"965\" data-end=\"983\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"969\" data-end=\"983\"\u003eTank Mates\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"984\" data-end=\"1170\"\u003e\n\u003cli data-section-id=\"aqfin5\" data-start=\"984\" data-end=\"1004\"\u003eHighly predatory\u003c\/li\u003e\n\u003cli data-section-id=\"1qhi270\" data-start=\"1005\" data-end=\"1089\"\u003eBest with:\n\u003cul data-start=\"1022\" data-end=\"1089\"\u003e\n\u003cli data-section-id=\"1wyuc28\" data-start=\"1022\" data-end=\"1052\"\u003eSimilar-sized, robust fish\u003c\/li\u003e\n\u003cli data-section-id=\"cndb98\" data-start=\"1055\" data-end=\"1089\"\u003eOther predators (with caution)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1p2k6nx\" data-start=\"1090\" data-end=\"1170\"\u003eAvoid:\n\u003cul data-start=\"1103\" data-end=\"1170\"\u003e\n\u003cli data-section-id=\"1207qf4\" data-start=\"1103\" data-end=\"1133\"\u003eSmall fish (will be eaten)\u003c\/li\u003e\n\u003cli data-section-id=\"1gob16\" data-start=\"1136\" data-end=\"1170\"\u003ePassive or slow-moving species\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1172\" data-end=\"1175\"\u003e\n\u003ch3 data-section-id=\"12sdk7u\" data-start=\"1177\" data-end=\"1189\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1181\" data-end=\"1189\"\u003eDiet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1190\" data-end=\"1209\"\u003eStrict carnivore:\u003c\/p\u003e\n\u003cul data-start=\"1210\" data-end=\"1334\"\u003e\n\u003cli data-section-id=\"1p386ei\" data-start=\"1210\" data-end=\"1257\"\u003eLive feeder fish (often required initially)\u003c\/li\u003e\n\u003cli data-section-id=\"173puef\" data-start=\"1258\" data-end=\"1307\"\u003eFrozen\/thawed fish and shrimp (with training)\u003c\/li\u003e\n\u003cli data-section-id=\"j9r7y5\" data-start=\"1308\" data-end=\"1334\"\u003eRarely accepts pellets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1336\" data-end=\"1390\"\u003e👉 Feeding can be challenging—experience recommended\u003c\/p\u003e\n\u003chr data-start=\"1392\" data-end=\"1395\"\u003e\n\u003ch3 data-section-id=\"9pq1nd\" data-start=\"1397\" data-end=\"1420\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1401\" data-end=\"1420\"\u003eCare \u0026amp; Behavior\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1421\" data-end=\"1611\"\u003e\n\u003cli data-section-id=\"ny9iix\" data-start=\"1421\" data-end=\"1478\"\u003eAmbush predator—prefers dim lighting and hiding spots\u003c\/li\u003e\n\u003cli data-section-id=\"q18p1y\" data-start=\"1479\" data-end=\"1512\"\u003eCan be shy during acclimation\u003c\/li\u003e\n\u003cli data-section-id=\"1u8bnn2\" data-start=\"1513\" data-end=\"1560\"\u003eRequires strong filtration and stable water\u003c\/li\u003e\n\u003cli data-section-id=\"af1372\" data-start=\"1561\" data-end=\"1611\"\u003eLow activity with sudden bursts during feeding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1613\" data-end=\"1616\"\u003e\n\u003ch3 data-section-id=\"ah1n2u\" data-start=\"1618\" data-end=\"1642\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1622\" data-end=\"1642\"\u003eWhy We Love Them\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1643\" data-end=\"1797\"\u003e\n\u003cli data-section-id=\"1yk4xqn\" data-start=\"1643\" data-end=\"1674\"\u003eExtremely rare in the hobby\u003c\/li\u003e\n\u003cli data-section-id=\"19gbd6q\" data-start=\"1675\" data-end=\"1728\"\u003eUnique alternative to other Chinese perch species\u003c\/li\u003e\n\u003cli data-section-id=\"1h7tq0x\" data-start=\"1729\" data-end=\"1758\"\u003eIntense predator behavior\u003c\/li\u003e\n\u003cli data-section-id=\"1lhcpsc\" data-start=\"1759\" data-end=\"1797\"\u003ePerfect for collector-level setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1799\" data-end=\"1802\"\u003e\n\u003ch3 data-section-id=\"krndik\" data-start=\"1804\" data-end=\"1830\"\u003e\u003cspan role=\"text\"\u003e⚠️ \u003cstrong data-start=\"1811\" data-end=\"1830\"\u003eImportant Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1831\" data-end=\"1989\"\u003e\n\u003cli data-section-id=\"64ur3d\" data-start=\"1831\" data-end=\"1856\"\u003eNot beginner-friendly\u003c\/li\u003e\n\u003cli data-section-id=\"hpsvz\" data-start=\"1857\" data-end=\"1898\"\u003eOften requires live feeding initially\u003c\/li\u003e\n\u003cli data-section-id=\"1aysqc3\" data-start=\"1899\" data-end=\"1953\"\u003eVery predatory—tank mates must be chosen carefully\u003c\/li\u003e\n\u003cli data-section-id=\"1ngsfr9\" data-start=\"1954\" data-end=\"1989\"\u003eSensitive to poor water quality\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"vendor-unknown","offers":[{"title":"3 - 3.5 inches","offer_id":46093342867652,"sku":null,"price":145.0,"currency_code":"USD","in_stock":false},{"title":"4 - 4.5 inches","offer_id":46093342900420,"sku":null,"price":165.0,"currency_code":"USD","in_stock":true},{"title":"5 - 5.5 inches","offer_id":46093342933188,"sku":null,"price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/5286\/6500\/files\/ChatGPTImageApr26_2026_11_55_17PM.png?v=1777262129","url":"https:\/\/www.predatoryfins.com\/products\/big-eye-mandarin-fish-siniperca-kneri-copy","provider":"Predatory Fins","version":"1.0","type":"link"}