a glittery silver dollar fish in closeup, a popular aquarium pet from south america

america american animal animals aquaculture aquarium characidae characids characiformes characins closeup dollar exotic eye face fish fishes from glitter glitters glittery gray grey head life marine metynnis myleus myloplus mylossoma pet pets popular portrait reef reefs scale scales serrasalminae shining shiny silver skin south sparkles sparkling sparkly swimming tank tropical underwater water white