Silver Dollar (Myloplus rubripinnis) is a large, disc-shaped schooling fish known for its reflective, silvery body and peaceful nature. Despite their resemblance to piranhas, Silver Dollars are herbivorous and ideal for larger community aquariums with robust plant setups or artificial décor.
Description:
Common Name: Silver Dollar
Scientific Name: Myloplus rubripinnis
Family: Serrasalmidae
Size: 6–8 inches
Temperament: Peaceful
Difficulty: Easy
Native Region:
South America (Amazon River Basin and tributaries)
Aquarium Setup:
Tank Size: Minimum 75 gallons
Temperature: 74–82°F
pH: 6.0–7.5
Hardness: Soft to moderately hard
Decor: Open swimming space, subdued lighting, and hardy plants or artificial plants (they will eat soft vegetation)
Additional Tips:
• Schooling: Keep in groups of 5 or more for social well-being
• Tankmates: Peaceful, suitable with other large non-aggressive species
• Diet: Primarily herbivorous – provide leafy greens, spirulina flakes, veggie pellets, and blanched vegetables
• Behavior: Active swimmers that prefer mid-to-upper levels of the tank
