dominant male of bleeding heart tetra, exotic ornamental blackwater fish from rio negro, in breeding colors is ready to attack

adult aggression amazonas aqua aquarium attack barcelos biotope black blackwater bleeding brazil breeding bright careful characidae characin clear closeup colorful colors courtship decorative design dominance dominant echinodorus ecology endangered endemic exotic exotics fauna fearful fish fishkeeping free freshwater habitat healthy heart hobby hyphessobrycon instinct macro male natural nature negro ornamental piaba plant project protection ready red rio rival smart space tank template tetra threat timid underwater vegetation water