Bleeding Heart Tetra

Bleeding Heart Tetra (Hyphessobrycon erythrostigma) is one of the most iconic and elegant freshwater aquarium fish available to aquascapers and tropical fish enthusiasts. Native to the upper Amazon basin in South America, particularly in Colombia and Peru, this species is instantly recognizable by the vivid red “bleeding heart” marking located just behind the gill plate. This natural heart-shaped blotch contrasts beautifully against its shimmering silver body, which often displays subtle hues of pink, copper, and iridescent blue under proper aquarium lighting.

Growing to an average size of 6 to 7 cm (about 2.5 inches), the Bleeding Heart Tetra is considered a medium-sized tetra with a laterally compressed body and gracefully extended fins. Mature specimens, especially males, may develop elongated dorsal fins and slightly more intense coloration. When kept in optimal water conditions, their translucent fins can show delicate tones of red and smoky gray, adding depth and movement to planted aquarium layouts.

Bleeding Heart Tetras thrive in soft, slightly acidic water that mimics their natural blackwater habitat. Ideal parameters include a temperature range between 24–28°C (75–82°F), pH between 5.5 and 7.0, and gentle filtration with moderate water flow. They appreciate dimmer lighting conditions, especially when combined with floating plants, driftwood, and dense aquatic vegetation. A well-planted aquascape not only enhances their coloration but also helps reduce stress and encourages natural schooling behavior.

As a peaceful schooling species, Hyphessobrycon erythrostigma should be kept in groups of at least six individuals, though larger groups of eight to twelve provide more dynamic and visually appealing displays. In a planted aquarium, they often swim in the midwater column, forming loose schools that move gracefully through stems and mosses. Their calm temperament makes them suitable tank mates for other peaceful community fish such as small rasboras, dwarf cichlids, Corydoras catfish, and other non-aggressive tetras.

Feeding Bleeding Heart Tetras is relatively simple, as they are omnivorous and readily accept high-quality flakes, micro pellets, and frozen or live foods such as bloodworms, daphnia, and brine shrimp. A varied diet enhances their coloration and supports overall health. Regular water changes and stable parameters are essential to maintaining their vibrant appearance and longevity, which can reach up to five years or more in well-maintained aquariums.

In aquascaping, the Bleeding Heart Tetra is often chosen as a focal schooling fish due to its distinctive red marking and elegant swimming style. Against a backdrop of lush green plants, dark driftwood, or moss-covered stones, the heart-shaped spot becomes a striking visual element that draws attention without overwhelming the layout. Their reflective scales catch natural aquarium lighting beautifully, creating a dynamic interplay of shimmer and color that enhances depth in nature-style aquariums.

Whether used in a biotope-inspired setup or a modern planted tank, the Bleeding Heart Tetra remains a timeless choice for aquarists seeking a peaceful, visually captivating freshwater fish. Its unique marking, gentle behavior, and compatibility with planted environments make Hyphessobrycon erythrostigma a standout species in the world of tropical aquarium fish.