hyphessobrycon socolofi, bleeding heart tetra, wild freshwater fish from barcelos, rio negro, competing males in natural biotope

amazonas animal aqua aquarium aquatic barcelos biotope blackwater bleeding breed bright caudal characidae clear closeup colorful competing cute decorative dorsal driftwood echinodorus ecology endemic eye fauna fin fish fishkeeping freshwater habitat heart hobby hyphessobrycon instinct line lips little live macro male males mouth natural nature negro operculum ornamental photo plant red rio side socolofi species specimen squama tank tetra underwater water wild