Spirulina platensis is a cyanobacterium containing up to 60% protein, chlorophyll, phycocyanin, and carotenoids. It enhances growth performance, reproductive output, and colour expression in shrimp. Spirulina is also rich in gamma-linolenic acid (GLA), vitamins B-complex, and minerals, making it a complete functional ingredient that strengthens immune responses and boosts pigmentation simultaneously.