juvenile bleeding heart tetra in neon glowing colors, aggressive rio negro endemic characin fish in blackwater biotope

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