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Merah Rasbora

The Merah Rasbora is an amazing fish with a great temperament. They are very timid so this makes them a great addition to a shrimp or snail tank. The Merah Rasbora can reach lengths of just under 1 inch. Their scientific name is Boraras merah. 

Please Note: All fish shipments have a 100% Live Arrival Guarantee when shipping with Overnight (1 Day) option. All other options void our Live Arrival Guarantee for fish. 

We recommend keeping these fish in group of 10 or more due to their timid nature. 

In nature, these fish come from slow moving black water streams. They prefer lots of leaves, wood and rock work. Therefore, these fish are the perfect addition to a well planted buffered aquarium (PH less than 7). In nature, the Merah Rasbora feed on micro organism and small insects. 

Our Tank Parameters

  • Ph: 7.2 to 7.5
  • Gh: 8 to 16
  • Kh:  4 to 7
  • TDS: 180 to 250
  • Temp: 70 to 74

Tank Recommendations

  • Leaves: Indian Almond or Guava
  • Wood: Malaysian or Mopani
  • Cones: Alder Cones
  • Other: A buffered substrate as they prefer soft acidic water

Customer Reviews

Based on 18 reviews
Trina Russo


Diana Green
Beautiful, healthy little fish

I ordered 10 of these and was sent 12. All 12 arrived alive and active. They colored up almost immediately once in the tank. I’ve ordered probably about 35 fish from Flip Aquatics over the past couple years, and they’ve all been healthy and delightful additions to my aquariums. Will continue to choose Flip Aquatics for my fish and shrimp.

Patricia Dailey
Merah Rasbora

Great nano fish. Very active and coloring up well.

Bennett Oberlander
Looking good

Was waiting for some phoenix to come back in stock on another site but saw these and said what the heck. All arrived healthy and showing some good color.

Nicole Orenstein
Best little fish

I ordered 12 in the middle of winter, subfreezing temperatures. All 14(!) made it here alive, perfectly packaged and safe. Their water was 71 degrees despite the 25 degree weather. They're already settled in, full of life and beautiful color after a week.