Harlequin Rasbora (Trigonostigma heteromorpha)
The Harlequin Rasbora is a striking and resilient fish, loved by aquarists for its distinctive black triangular marking and shimmering orange-red body. Native to the peaceful streams of Southeast Asia, these small, peaceful fish make a wonderful addition to any community aquarium, getting along well with other non-aggressive species. Their graceful, schooling behavior and vibrant colors add life and movement to your tank, especially when kept in groups of eight or more.
 
Harlequin Rasboras are ideal for both beginner and experienced aquarists due to their hardiness and relatively low-maintenance requirements. They thrive in planted aquariums with ample swimming space and gentle lighting. Here are their preferred water parameters for a healthy environment:
 
Temperature: 72-81°F (22-27°C)
pH: 6.0-7.5
Hardness: 2-12 dGH
 
Perfect for peaceful community tanks, the Harlequin Rasbora is a fantastic choice for aquarists looking to add color and elegance to their aquarium!
 
Diet: 
Flakes/pellets
frozen food (bloodworms, brineshrimp)
live white worms 
 
Good Tank Mates: 
Angelfish
discus 
snails
corys 
shrimp
plecos
other tetras
and much more!