The Rummynose Tetra (Hemigrammus bleheri) is a small and captivating fish native to the Amazon River basin in South America. It is a popular choice among aquarium enthusiasts due to its striking appearance and peaceful nature. In this article, we will delve into the various aspects of the Rummynose Tetra, including its natural habitat, physical characteristics, ideal aquarium setup, diet, and compatibility with other fish.

The Rummynose Tetra originates from the clearwater streams and rivers of the Amazon River basin in Brazil, Colombia, and Peru. They are typically found in densely vegetated areas with slow to moderate water flow, preferring to school near the surface of the water. The species was first discovered in the Rio Vaupés, a tributary of the Rio Negro in Brazil.

The Rummynose Tetra boasts a distinctive appearance, making it easily recognizable among other tetra species. It has a sleek, torpedo-shaped body with a vibrant red coloration on its head and a horizontal black band that extends from the nose to the tail. This striking contrast gives the fish its name, as the red coloration looks like a "nose" and the black band appears as a "rummy." The rest of the body is silver or olive-green, creating a stunning overall effect. On average, Rummynose Tetras grow to about 2 inches (5 cm) in length.

To ensure the well-being of Rummynose Tetras in a home aquarium, it is crucial to replicate their natural habitat as closely as possible. A tank size of at least 20 gallons is recommended to provide enough swimming space and accommodate a school of these fish. A dark substrate, like gravel or sand, and the addition of live or artificial plants will mimic their preferred environment and provide hiding spots.

Maintaining good water quality is essential for the health of Rummynose Tetras. Regular water changes and filtration are necessary, as they are sensitive to fluctuations in water parameters. The temperature should be maintained between 75°F and 82°F (24°C - 28°C), with a pH range of 6.0 to 7.5.

Rummynose Tetras are omnivorous and have a diverse diet in the wild, consisting of small insects, crustaceans, algae, and plant matter. In a home aquarium, they readily accept various types of commercially available flake, pellet, and freeze-dried foods. However, to ensure optimal health and coloration, it is recommended to supplement their diet with high-quality live or frozen foods such as brine shrimp, daphnia, and bloodworms.

Rummynose Tetras are known for their peaceful and sociable nature. They are schooling fish, so keeping them in groups of at least six is crucial to reduce stress and encourage their natural behaviors. In larger schools, they become bolder and more active, creating a captivating display of synchronized swimming.

Regarding tankmates, Rummynose Tetras are generally compatible with other peaceful community fish. Ideal tankmates include other small and non-aggressive species like other tetras, rasboras, dwarf cichlids, and peaceful catfish. Avoid keeping them with aggressive or fin-nipping fish, as they may become stressed or injured.

In a well-maintained aquarium with ideal water conditions and a planted setup, Rummynose Tetras may breed. However, they can be somewhat challenging to breed, and a separate breeding tank with soft, slightly acidic water is recommended. The female will lay adhesive eggs on plants or other surfaces, and the male will fertilize them. Once the eggs are laid, it is essential to remove the adult fish to prevent them from eating the eggs. The eggs will hatch in about 24 to 36 hours, and the fry will become free-swimming a few days later.

The Rummynose Tetra is a stunning and captivating fish that can bring a burst of color and liveliness to any aquarium. With their peaceful demeanor and vibrant appearance, they are an excellent choice for both beginners and experienced aquarists. By providing them with a suitable environment, a balanced diet, and proper companions, you can enjoy the mesmerizing beauty and charm of Rummynose Tetras in your own aquatic paradise.