bleeding heart tetra dominant male show neon glowing colors, shine in tea color acid water low light, aggressive rio negro endemic

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 transparent tropical underwater vulnerable wild wildlife