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Harlequin Rasbora

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Original price $3.99 - Original price $34.99
Original price
$3.99 - $34.99
Current price $3.99
Style: 1 Fish

Harlequin Rasbora (Trigonostigma heteromorpha)


With its iconic triangular black patch against a brilliant orange body, the Harlequin Rasbora is an aquarist's delight. Originating from the freshwater streams of Southeast Asia, this small fish brings a burst of color and vivacity to any aquarium setup, making it a favorite among hobbyists of all levels.


  • Distinctive black patch on the posterior half of the body
  • Shimmering, orange-copper hue
  • Graceful, yet active swimmer
  • Peaceful temperament, ideal for community tanks

How to Keep:

Harlequin Rasboras are relatively easy to care for. They flourish in well-planted tanks with subdued lighting, which replicates their natural forest stream habitats. Being schooling fish, they are best kept in groups of six or more, which allows them to display their natural schooling behavior and vibrant colors. Clean, stable water conditions with gentle filtration are essential for their well-being.


  • Scientific Name: Trigonostigma heteromorpha
  • Temperature: 22 - 28 °C
  • pH Level: 6.0 - 7.5
  • TDS: 50-150 ppm
  • GH: 5-12
  • KH: 3-10
  • Lifespan: 5-8 years
  • Size: 3.5-5 cm
  • Diet: Omnivore
  • Behavior: Peaceful
  • Breeding: Intermediate