The Harlequin Rasbora is loved by many aquarium hobbyists. This captivating small fish is very easy to care for which is good for beginners. They thrive best and look pretty cool in a school of 10 or more individuals, which is a perfect addition to peaceful community aquariums. You can feed them with flakes, micropellets, and small frozen foods such as daphnia, baby brine shrimp, cyclops, and mosquito larvae.
The average lifespan of the Harlequin Rasbora is between 5 and 8 years. Most will live until they’re about 6 years old, with good care and genetics determining if they will hit the upper end of that range
Harlequin Rasbora Size:
The max size of the Harlequin Rasbora is about 2 inches in length when in captivity. These fish don’t get very large at all when fully grown.
Harlequin Rasbora care is quite easy no matter how much experience you have, which is great news if you’re a potential owner. These fish are quite tolerant and have no problem dealing with slight fluctuations in temperature.
Water temperature: 72°F to 80°F (74°F should be your target)
pH levels: 6.0 to 7.8 (6.5 is best)
Water hardness: 2 to 15 KH (the lower the better)