This technical guidance factsheet was developed as part of a series of practical on-farm hatchery management guides based on the FAO Artemia Manual. It provides a concise, user-friendly reference for hatchery operators on the enrichment of Artemia nauplii to enhance their nutritional value before feeding to fish and shrimp larvae. The factsheet outlines the key steps involved in nauplii enrichment, including tank preparation, enrichment product preparation and application, harvesting of enriched nauplii, and storage options. It also highlights critical operational parameters, such as nauplii density, dissolved oxygen, temperature and pH, to support effective enrichment and the production of high-quality live feed for hatchery operations. Presented in a highly visual format, the guide transforms the detailed information contained in the FAO Artemia Manual into a practical tool that supports the safe and effective production of high-quality Artemia for aquaculture hatcheries.