Crushed algae tablets make an ideal treat. Flake foods or any other suitable food should be fed several times daily. Water Chemistry Silver Dollars are hardy fish that can withstand a wide variety of water conditions. The recommended pH for the aquarium is anywhere between 6.5-7.2. The water should be soft and kept at a temperature between 75-82 degrees F. Breeding Spawning information on Metynnis argenteus is mixed, but the species is said to lay its eggs in and around floating plants.
Males have a longer anal fin than females.