Rainbow Shiner - 4cm

Species Profile

• Scientific Name: Notropis chrosomus
• Common Name: Rainbow Shiner
• Adult Size: 2.5–3 inches (6–7.5 cm)
• Life Expectancy: 2–3 years (may reach up to 4 years in optimal conditions)
• Habitat: Cool, clear, fast-moving streams and creeks with gravel or sandy bottoms; native to the southeastern United States, particularly in Alabama, Georgia, and Tennessee.

Tank Requirements

• Minimum Tank Size: 20 gallons (for a small group; larger tanks recommended for schools of 6+)
• Ideal Temperature: 60–75°F (15–24°C)
• pH Range: 6.5–7.5
• Water Hardness: 5–15 dGH
• Temperament: Peaceful and active; best kept in schools of at least 6 to promote natural behavior and reduce stress. Suitable for coldwater community tanks.

Diet & Nutrition

• Omnivorous:
  Accepts a wide range of foods, including small live or frozen foods (daphnia, brine shrimp), high-quality flake food, micro pellets, and vegetable matter. A varied diet helps enhance coloration and vitality.

Appearance

• Color: Brilliant iridescent blue and pink hues, especially vivid in males during breeding season. Silver body base with colorful reflections.

• Size: Small, streamlined body with pointed snout and forked tail.

Distinctive Features

• Striking breeding coloration in males (vivid blue and magenta).
• Schooling fish with fast, darting movements.
• One of the most colorful native minnows in North America, making them popular in unheated aquariums.
• Does well in well-oxygenated, current-rich environments with natural décor like rocks and aquatic plants.