Description
Clown Knife Fish – Graceful Predator with Hypnotic Motion
(Chitala ornata)
The Clown Knife Fish (Chitala ornata) is an exotic and captivating predator native to Southeast Asia’s slow-moving rivers and lakes. With its long, knife-shaped body, undulating swimming motion, and signature row of "eye spots" along its silver flanks, this nocturnal hunter is both elegant and imposing. A favorite among experienced aquarists, the Clown Knife makes a stunning centerpiece for large show tanks.
Key Features:
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Iconic Appearance: Metallic silver body with black ocelli (“eye spots”) near the tail
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Undulating Movement: Moves using a continuous wave motion of its long anal fin—hypnotic and fluid
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Large Size: Can grow up to 90 cm (36 inches) in captivity
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Intelligent Behavior: Recognizes its keeper and may hand-feed over time
Tank Requirements:
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Minimum tank size: 500 liters (125+ gallons) for juveniles; much larger for adults
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Temperature: 24°C–30°C (75°F–86°F)
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pH: 6.0–7.5
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Prefers dim lighting and soft substrate with driftwood or PVC pipes for shelter
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Needs a long, wide tank for free swimming space
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Use a secure lid—juveniles are known to jump
Compatibility:
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Semi-aggressive and predatory—will eat smaller fish
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Can be kept with large, peaceful tankmates (e.g., large catfish, bichirs, arowanas)
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Best housed solo or with similarly sized fish to avoid territorial issues
Feeding Tips:
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Carnivorous—enjoys live or frozen foods like shrimp, fish, and worms
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Can be trained to eat pellets and prepared meaty foods
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Feed 3–5 times a week, adjusting based on age and size
Why Choose the Clown Knife Fish?
The Clown Knife Fish is a mesmerizing addition for advanced aquarists seeking a show-stopping, intelligent predator. Its unique swimming style, bold presence, and ability to grow large make it a centerpiece like no other in the freshwater world.
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