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The Harlequin Rasbora, also known as Trigonostigma heteromorpha, is a small and peaceful freshwater fish species that originates from Southeast Asia. They are a popular choice for aquarists due to their stunning coloration, ease of care, and active nature.


Harlequin Rasboras are relatively small, with a maximum size of 2 inches, and require a minimum tank size of 10 gallons. They are active swimmers and appreciate plenty of hiding places, live plants, and open swimming areas. They are also peaceful and can be kept with other small, peaceful species.


These omnivores will eat a variety of foods, including flakes, pellets, and small pieces of vegetables. It's important to provide a balanced diet to ensure they receive all the necessary nutrients for optimal health.


The Harlequin Rasbora's unique characteristic is their stunning orange and black coloration, which adds a vibrant pop of color to any aquarium. They are also known for their active nature, often seen swimming in schools and darting around the aquarium.


Water Parameters:

  • pH: 6.0-7.5
  • gH: 3-10
  • kH: 1-5
  • TDS: 100-300
  • Temperature: 72-80°F


Please note that these are general guidelines, and for more accurate values, we encourage you to contact Living Aquarium by phone or in person. Within store hours, our team of experts are always happy to answer any questions you may have and provide personalized guidance on care.

Harlequin Rasbora

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