adult female of bleeding heart tetra, wide-spread blackwater characin fish live in blackwater biotope aquarium, rio negro endemic

adult amazonas animal aqua aquarium aquascape aquatic barcelos basin beauty biotope blackwater bleeding bright business care characidae characin clear concept conditions controlled cultivation curious cute decorative design dot driftwood dwarf eco ecology endemic fauna female fin fish fishkeeping freshwater habitat heart hobby hyphessobrycon instinct little live low macro male natural nature negro ornamental pet red rio side socolofi species tank tetra threat underwater water widespread young