Single Bar Dollar - 2.5 inch

Single Bar Dollar, often referred to as Black Bar Silver Dollar, is a handsome freshwater fish admired for its shiny disc-shaped body and bold dark body marking. At around 2.5 inches, this juvenile specimen is an excellent choice for aquarists planning a spacious display with active mid-water swimmers. Its calm nature and schooling tendency make it attractive for larger peaceful to semi-active community aquariums.

This fish is native to South American river systems and does best when kept in a group, where it feels more secure and shows more natural movement. Like many silver dollar types, it appreciates clean, well-filtered water, open swimming space, and a balanced diet with strong vegetable content. The reflective body catches aquarium light nicely, giving the tank a lively and premium look.

Key Features

• Appearance: Rounded, laterally compressed body with a bright silver sheen and a distinct dark vertical bar that gives the fish its common name.
• Size: Offered here at approximately 2.5 inches; adults can grow much larger with proper care and tank space.
• Colors: Silver body tone with black to dark charcoal barring, often becoming more defined as the fish settles well.
• Lifespan: With stable water quality and proper feeding, silver dollar types can live for several years in home aquariums.
• Temperament: Generally peaceful, active, and social, but best maintained in a group rather than alone.
• Water Type: Freshwater species suited to mature aquariums with good filtration and regular maintenance.

Care Requirements

• Tank Size: A minimum of 4 feet tank is recommended for a group, as these fish are fast swimmers and need horizontal space more than height.
• Water Parameters: Ideal temperature is around 24-28°C with pH 6.5-7.5. Keep ammonia and nitrite at zero and nitrate low through regular water changes.
• Diet: Omnivorous with a strong preference for plant matter. Offer quality pellets or flakes along with spirulina-based foods, blanched vegetables, and occasional protein treats.
• Tank Mates: Suitable with other peaceful to moderately active larger freshwater fish that are not tiny enough to be intimidated. Avoid very aggressive species and cramped mixed tanks.
• Care Tips: Keep them in a small group for confidence and natural behavior. Use secure tank covers, maintain strong filtration, and avoid delicate soft plants as they may nibble tender leaves.
• Aquascape Preference: Best in tanks with open swimming areas, some driftwood or structured décor, and hardy plants if used.

Single Bar Dollar is a great option for hobbyists who want a unique silver schooling fish with a bold pattern and active personality. Juvenile specimens adapt best when introduced into stable aquariums, and they reward good care with confident schooling behavior and eye-catching movement.