Least Rasbora
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Pictures of fish and fish in store may vary, these are just examples/fully grown fish

Boraras urophthalmoides, also known as the Exclamation Point Rasbora or Least Rasbora, are a delightful and colorful addition to your freshwater aquarium. With its vibrant hues and charming exclamation mark pattern, Boraras urophthalmoides brings a burst of energy and natural beauty to your aquascape. This captivating fish is renowned for its schooling behavior and eye-catching appearance, making it a perfect choice to add life and vibrancy to your underwater world.

Care Guide: Boraras urophthalmoides requires specific care to thrive and display its full spectrum of colors. Follow these guidelines to provide optimal conditions for the health and happiness of your Exclamation Point Rasboras:

Aquarium Setup:

  • Tank Size: A tank of at least 10 gallons is suitable for a small school of Boraras urophthalmoides.
  • Substrate: Use fine gravel or sand as substrate to create a comfortable environment for foraging.
  • Plants and Decor: Provide plenty of live plants, driftwood, and hiding spots to mimic their natural habitat and create a sense of security.

Water Parameters:

  • Temperature: Maintain water temperatures between 72-82°F (22-28°C).
  • pH: Aim for a slightly acidic to neutral pH range of 6.0-7.5.
  • Hardness: Keep water hardness in the soft to moderately hard range, around 2-15 dKH.

Filtration and Oxygenation:

  • Provide efficient filtration and gentle water movement to ensure good oxygenation, as Boraras urophthalmoides appreciates well-oxygenated water.

Diet and Feeding:

  • Offer a varied diet of high-quality flake, pellet, and micro-pellet foods suitable for small fish.
  • Supplement their diet with live or frozen foods like daphnia, cyclops, and newly hatched brine shrimp to ensure optimal nutrition.


  • Opt for peaceful tankmates that share similar water requirements. Avoid aggressive or fin-nipping species.
  • Keep them in a small group of at least 6 individuals to encourage natural schooling behavior.

Behavior and Compatibility:

  • Boraras urophthalmoides are known for their lively and energetic nature. They thrive when kept in a school, exhibiting fascinating schooling behavior.
  • They are compatible with other small, peaceful fish species that inhabit similar water conditions.


  • Regular water changes are essential to maintain water quality and prevent the buildup of waste.
  • Maintain good water hygiene and ensure the tank remains clean and well-maintained.

Experience the vibrant beauty of Boraras urophthalmoides in your aquarium. Order now to witness the stunning colors and lively behavior of these Exclamation Point Rasboras. Whether you’re a seasoned aquarist or a beginner, Boraras urophthalmoides will bring a splash of color and liveliness to your freshwater aquarium, providing endless fascination and enjoyment.



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