couple of bleeding heart tetra, hyphessobrycon socolofi, popular ornamental blackwater fish from rio negro

adult amazonas aqua aquarium background barcelos behaviour biotope blackwater bleeding blurred brazil bright careful characidae clear close colorful couple decorative design driftwood echinodorus ecology endangered endemic fauna fearful fish fishkeeping free freshwater habitat healthy heart hobby hyphessobrycon instastory instinct macro natural nature negro ornamental plant popular protection red rio show smart socolofi space spawn spawning tank tetra threat timid underwater water