The Roseline Shark (Denison Barb), scientifically known as Sahyadria denisonii, is a striking and active freshwater fish that has gained popularity among aquarium enthusiasts. Native to the Western Ghats region of India, this species belongs to the family Cyprinidae and is renowned for its vibrant colors, distinctive appearance, and dynamic behavior.

One of the defining features of the Roseline Shark is its elongated and streamlined body, marked by a horizontal stripe that runs along its lateral line. This stripe is vivid red or orange, contrasting against the silver or gold background color of the rest of the body. The caudal fin is forked, and the overall appearance is sleek and visually appealing. Adult Roseline Sharks typically reach lengths of 4 to 6 inches (10 to 15 centimeters).

Creating a suitable environment is crucial for the well-being of Roseline Sharks. They thrive in well-planted aquariums with ample swimming space. A tank of at least 55 gallons is recommended for a small group of these active fish. The addition of driftwood, rocks, and other decorations can provide hiding spots and mimic the riverine habitats they inhabit in the wild.

Maintaining stable water conditions is essential for the health of Roseline Sharks. They prefer slightly acidic to neutral water with a pH range of 6.5 to 7.5. The water temperature should be kept between 72 and 79 degrees Fahrenheit (22 to 26 degrees Celsius). Regular water changes help ensure optimal water quality.

Roseline Sharks are omnivores with a preference for both plant matter and protein-rich foods. Their diet should include high-quality flakes, pellets, and live or frozen foods such as bloodworms, brine shrimp, and daphnia. A varied diet contributes to their overall health and enhances their vibrant coloration.

These sharks are known for their active and schooling behavior. They thrive when kept in groups of at least six individuals, and their schooling dynamics add to the visual appeal of the aquarium. While they are generally peaceful, care should be taken when selecting tank mates. Avoid housing them with aggressive or territorial species, and choose fish of similar size and temperament.

Breeding Roseline Sharks in captivity can be challenging due to their specific requirements. In their natural habitat, these fish migrate to spawn during the monsoon season. Successfully breeding them in an aquarium often involves simulating these seasonal changes through adjustments in water parameters, such as temperature and water flow.

Roseline Shark is a captivating and dynamic addition to freshwater aquariums, admired for its vibrant colors and active behavior. With proper care, a well-designed environment, and attention to their social needs, these sharks can thrive and become a focal point in community tanks.