Red Flag Tail ProchilodusName: Red Flag Tail Prochilodus (Prochilodus mariae) Max Size: Up to 18 inches Water Parameters: pH 6. 5 7. 5, temperature 72 82F, hardness 5 15 dGH Diet: Herbivorous primarily feeds on algae, plant matter, and biofilm in the wild. In an aquarium, they should be given high quality algae wafers, spirulina, blanched vegetables, and occasionally small amounts of live or frozen foods like bloodworms. Temperament: Generally peaceful but can be territorial,