bleeding heart tetra in breeding colors, wild rio negro endemic fish in blackwater biotope planted aquarium with tea colored water

acidic adult amazonas animal aqua aquarist aquarium aquatic barcelos biotope blackwater bleeding breeding bright business captive care characidae clearwater colored colors commercial conditions controlled cultivation decorative design dot driftwood dwarf eco ecology endemic exotic experienced fauna fish fishkeeping freshwater habitat heart hobby hyphessobrycon ichthyology illustration instinct low macro male natural nature negro only ornamental pet planted protection red rio side smart socolofi spawn species specimen tannin tea tetra threat trade underwater water wild young