Pyrrhonotus Tetra

Hyphessobrycon pyrrhonotus, known as the Burgundy Tetra, is a medium-sized species endemic to the middle Rio Negro basin in Amazonas, Brazil. Its upper body glows a rich burgundy-red, separated sharply from the pale silver lower flank, producing a dramatic two-toned effect that intensifies under warm-spectrum lighting. It is a blackwater species that thrives in soft, highly acidic, tannin-rich conditions simulating the dark, humic waters of the Rio Negro. A peaceful schooling fish best kept in groups of eight or more. Its striking coloration and relatively manageable care requirements make it a sought-after species for blackwater biotope enthusiasts.

Water: Very soft, acidic; pH 5.0–6.5, temperature 24–28 °C. Indian almond leaves and driftwood recommended. Tank: 70 L minimum; blackwater setup with dark substrate, leaf litter, and gentle sponge filtration. Feeding: Omnivore; micro-pellets, quality flake, frozen bloodworm, daphnia, cyclops. Breeding: Challenging; requires very soft, acidic blackwater conditions and fine-leaved spawning substrate. Compatibility: Peaceful; keep with other Rio Negro endemics such as dwarf cichlids and small pencilfish.