healthy and active bleeding heart tetra adult fish play in blackwater biotope aquarium, ready to spawn

active adult amazonas animal aqua aquadesign aquarium aquascape aquatic barcelos basin behaviour biotope blackwater bleeding bright business care characidae clear cultivation cute decorative design dot driftwood dwarf eco ecology endemic fauna fin fish fishkeeping freshwater group habitat hard healthy heart hobby hyphessobrycon instinct keep little live low macro male natural nature negro ornamental pet piaba play project ready red rio side socolofi spawn species tank tetra threat underwater water