Live feeds are an inevitable source of nutrition to aquaculture, especially for successful larval rearing. During the critical phase of larval transition in finfish and shellfish, live feeds, rich in essential nutrients and easy to digest, play a vital role in survival and growth. Common live feeds include phytoplankton and zooplankton, such as microalgae, rotifers, Artemia, copepods, cladocerans, and polychaete worms. Microalgae, particularly autotrophic species, such as diatoms and flagellates, are fundamental in larval nutrition, providing proteins, essential fatty acids, and other key nutrients. Heterotrophic microalgae, such as Thraustochytrids, are also important for their rich polyunsaturated fatty acids (PUFA) content. Rotifers are another critical live feed, especially for marine fish larvae, due to their suitable size and reproductive rates. Artemia, known for its optimal size and nutritional value, is widely used in aquaculture, with techniques developed for enriching Artemia to enhance its nutrient profile. Polychaete worms are used in shrimp broodstock diets for their high protein and fatty acid content, aiding reproductive performance. Copepods, despite challenges in mass production, are valued for their superior nutritional composition and suitability for various larval stages. Cladocerans, though less common, are also used for their balanced nutrient profile and ability to improve water quality. Advancements in live feed culture have significantly improved aquaculture practices. The development of artificial media and enrichment techniques has facilitated the mass culture of microalgae and other live feeds, supporting the growth and survival of various aquaculture species. Ensuring the availability of high-quality live feeds remains essential for the success of aquaculture systems.