Harlequin Rasbora (Trigonostigma heteromorpha)
The Harlequin Rasbora is a striking and popular freshwater fish known for its vibrant colors and peaceful nature. Native to the forest streams of Southeast Asia, this fish features a copper-orange body with a signature black triangular patch extending from the mid-section to the caudal fin.
They reach a size of around 1.5-2 inches and should be kept in schools of at least 6 to encourage natural behavior and reduce stress. These peaceful fish are well-suited for community tanks with similarly sized, non-aggressive tank mates. Tank companions could include other rasboras, tetras, and small peaceful catfish. The Harlequin Rasbora's temperament makes it an excellent addition to most peaceful aquarium setups.
Harlequin Rasboras are omnivores and enjoy a varied diet of high-quality flake or pellet food, as well as live and frozen foods such as brine shrimp, daphnia, and bloodworms. Their peaceful temperament makes them ideal tank mates for other peaceful community fish of similar size.
To replicate their natural habitat, use a soft, sandy substrate and incorporate driftwood, rocks, and plants like Java fern, Anubias, and Cryptocoryne for cover. Floating plants can be added to create a dimly lit environment. Maintain soft, slightly acidic water, and ensure stable water conditions for their well-being.
A minimum tank size of 10 gallons is recommended, with larger tanks being preferred for bigger schools. The ideal water parameters for these fish include a pH of 5.5-7.0, a hardness of 1-10 dGH, and a temperature range of 72-81°F (22-27°C).
Additionally, a securely fitted lid is essential to prevent escape, as the Harlequin Rasbora, like most rasboras, is an adept jumper.
To learn more about this fish, be sure to check out the Additional Information tab.
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