Spirulina in Koi Food: Color and Health Benefits

Spirulina is a blue-green algae packed with carotenoids and immune-boosting compounds. Common premium-food ingredient.

Color Enhancement

High carotenoid content (zeaxanthin, beta-carotene) deepens reds, oranges, yellows. Visible improvement in 4–6 weeks.

Immune Support

Polysaccharides in spirulina stimulate macrophage activity, supporting natural disease resistance.

Spirulina Percentage

Premium foods contain 3–8% spirulina. Higher percentages don't proportionally improve color but raise food cost.

Whites Stay White

Unlike some carotenoids, spirulina pigments rarely yellow white scales. Safer for year-round feeding.