shoal of bleeding heart tetra, hyphessobrycon socolofi, popular

adult aggression aggressive amazonas aqua aquarium background barcelos behaviour biotope black blackwater bleeding blurred brazil bright careful characidae characin clear closeup colorful decorative design dominance dominant driftwood echinodorus ecology endangered endemic fauna fearful fish fishkeeping free freshwater habitat healthy heart hobby hyphessobrycon instinct macro male natural nature negro ornamental piaba plant popular project protection red rio shoal smart socolofi space tank template tetra threat timid underwater water