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Midwest Aquarium and Pond Supplier LLC

(6) Royal Clown Knifefish

(6) Royal Clown Knifefish

$75.00 USD
$75.00 USD
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The royal clown knifefish (Chitala blanci) is a large, predatory freshwater fish known for its elongated, knife-shaped body and unique pattern. It is native to the slow-moving rivers and lakes of Southeast Asia and is distinct from the more common clown knifefish (Chitala ornata

). 

Appearance
  • Coloration: Unlike the standard clown knifefish, which has spots, the royal clown knifefish has black diagonal or mottled patterns on a silvery-gray body.
  • Size: They can reach up to 30–36 inches in length, making them a "monster fish" that is too large for the average home aquarium.
  • Body Shape:

    Like other knifefish, they have a laterally compressed, knife-like body with a continuous, undulating anal fin that allows them to move gracefully both forward and backward. 

Care and tank setup
  • Tank size: A minimum of 200 gallons is recommended for a single royal clown knifefish. Tank length and width are more important than height to accommodate their swimming patterns.
  • Lid: A tight-fitting, secure lid is essential, as these fish are known jumpers.
  • Water parameters:

    They are sensitive to poor water quality, so pristine, stable conditions are a must.
    • Temperature: 75–82°F (24–28°C).
    • pH: 6.5–7.5.
  • Aquascaping:

    Provide plenty of hiding spots with driftwood, caves, and large rocks. They prefer subdued lighting, which encourages them to come out during the day.
  • Substrate: A fine, sandy substrate is ideal for their delicate skin. 

Diet and feeding
  • Carnivorous: Royal clown knifefish are nocturnal predators that primarily feed on live prey in the wild.
  • Aquarium diet: They can be conditioned to accept frozen or meaty foods such as shrimp, chopped earthworms, or fish fillets. They may be hesitant to accept dry foods, so a varied diet of protein-rich, natural foods is often preferred. 

Behavior and tank mates
  • Temperament: They are generally peaceful towards similarly sized fish but will eat any fish or invertebrate that fits into their large mouth.
  • Territorial: As they mature, they can become more territorial, especially towards other knifefish. It is often best to keep them as a single specimen in a large tank unless there is a significant amount of space and cover.
  • Compatible tank mates:

    • Large, robust fish like oscar fish, peacock bass, large catfish, or arowanas.
  • Incompatible tank mates:
    • Small fish, as they will be eaten.
    • Aggressive or fin-nipping fish
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