bleeding heart tetra male in fluorescent breeding colors show natural behaviour, rio negro endemic wild pet in driftwood biotope

adult amazonas animal aqua aquascape aquatic barcelos blackwater bright business care characidae clear conditions controlled cultivation decorative demanding detail dot dwarf ecology ecosystem exotic farming fauna fish fishery fishkeeping free freshwater habitat hobby hyphessobrycon ichthyology instinct litter low macro nano ornamental pet piaba project red relax side socolofi space species tank threat tropical underwater vulnerable wildlife