The Rainbow Shiner is a breathtaking freshwater fish native to the clear river systems of North America. It has taken the global aquarium hobby by storm, breaking the myth that sub-tropical fish lack color. Growing to about 2 to 3 inches (5-8 cm), their everyday coloration consists of a beautiful translucent body with a shimmering gold-pink lateral stripe. However, during the breeding season, the males undergo a mind-blowing transformation, lighting up in metallic electric neon blue, purple, and fiery red fins. They are peaceful, incredibly active, and strictly schooling top-to-midwater swimmers.

Temperature: 10°C - 24°C (50°F - 75°F). Optimal health is achieved around 16°C - 22°C (60°F - 72°F). This is a sub-tropical/temperate fish, meaning a heater is rarely necessary indoors. They can even live in outdoor ponds year-round as long as the water doesn't freeze solid.
pH: 6.5 - 7.5
Hardness (GH): 5 - 15 dGH (Highly adaptable to soft and moderately hard water signatures).

Minimum Tank Size: Requires a minimum of 20 to 25 gallons (approx. 80-100 liters). Because they are fast, energetic, linear swimmers, they thrive best in long tanks (at least 3 feet / 90 cm in length). It is mandatory to keep them in schools of 6 to 8 individuals minimum (10+ is ideal) to reduce stress and witness their stunning group behaviors and colors.
Compatibility: 100% peaceful community fish. They are perfect for unheated community tanks alongside White Cloud Mountain Minnows, temperate Cichlids, Medaka Ricefish, cold-water Corydoras (like C. paleatus), and even dwarf shrimp (Neocaridina species), as their mouths are too small to pose a threat.

Unfussy omnivores. In the wild, they drift-feed on tiny insects and larvae at the water's surface. In the aquarium, they will instantly accept premium dry flakes and floating micro-pellets. To truly maximize their vibrant color potential, regularly supplement their diet with small live or frozen foods such as Baby Brine Shrimp, Daphnia, or finely chopped Bloodworms.

Pro Tip 1: The Color Secret (Flow & Oxygen): These shiners naturally inhabit pristine, fast-flowing creeks. Instruct your customers that providing strong water movement and high oxygenation (via wavemakers, spray bars, or air stones) is the key to unlocking their most intense metallic colors.
Pro Tip 2: Lidded Tanks are a Must: Rainbow Shiners are notorious jumpers, especially during high-speed courtship displays near the surface. Explicitly warn buyers to use a tightly secured lid or mesh cover to prevent accidents.
Pro Tip 3: Triggering the Neon Glow: A brilliant tip for your website description: let hobbyists know that they can trigger the dramatic "breeding dress" color transformation by performing a 20% water change with slightly cooler water to simulate natural spring conditions. The dominant males will light up almost instantly!

Raimbow Shiner (Notropis chrosomus)

$59.00

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