rummy-nose tetra, hemigrammus rhodostomus, tender dwarf ornamental characin fish from amazon river

active adult amazon animal aqua aquaculture aquarium background blurred brazil bright careful characidae characin clear clearwater closeup colourful decorative dwarf easy ecology endangered endemic fauna fearful fish fishkeeping free freshwater funny habitat healthy hemigrammus hobby instinct keep little macro nature orinoco ornamental pet plant protection red rhodostomus river rummynose schooling shoal smart space species specimen tank tender tetra threat timid tropical underwater vulnerable water