The Harlequin Rasbora is a popular freshwater fish that is highly sought after by aquarium enthusiasts. With its vibrant colors and peaceful nature, it is a great addition to any community tank.
The Harlequin Rasbora, also known as Trigonostigma heteromorpha, hails from the rivers and streams of Southeast Asia, particularly in Thailand, Malaysia, and Singapore. Its natural habitat consists of slow-moving waters with plenty of vegetation and leaf litter. This species is known for its ability to adapt to a wide range of water conditions, making it a hardy and low-maintenance fish for beginner aquarists.
One of the most striking features of the Harlequin Rasbora is its vibrant coloration. The body of the fish is primarily silver, with a bold black triangular patch that starts at the dorsal fin and extends to the midsection of the body. This patch is bordered by a bright red or orange stripe, giving the fish a visually stunning appearance. The fins are translucent and often have a subtle red or orange hue, adding to the overall beauty of the fish.
In addition to its stunning appearance, the Harlequin Rasbora is also known for its peaceful temperament. It is a schooling fish, which means it thrives in groups of at least six individuals. When kept in a group, the Harlequin Rasbora feels more secure and displays its natural behaviors, such as shoaling and exploring its environment. This fish is compatible with a wide range of tankmates, including other peaceful community fish like tetras, gouramis, and corydoras catfish.
When it comes to tank setup, the Harlequin Rasbora prefers a well-planted aquarium with plenty of hiding spots. It appreciates a substrate of fine gravel or sand and benefits from the addition of driftwood and dried leaves to mimic its natural habitat. The water temperature should be maintained between 72-79°F (22-26°C), with a pH level of 6.0-7.5. Regular water changes are essential to keep the water quality optimal for the fish.
Feeding the Harlequin Rasbora is relatively easy, as it is not a picky eater. It accepts a variety of foods, including high-quality flakes, pellets, frozen or live foods like brine shrimp and bloodworms. It is recommended to provide a balanced diet consisting of both dry and live foods to ensure the fish receives all the necessary
