The following study describes: the FAA profile of nauplii of the cyclopoid copepod Apocyclops panamensis collected from fertilized brackish-water ponds; the effects on FAA profiles when nauplii are acclimated from a low to higher salinity; and the feasibility of increasing the FAA pool in nauplii by direct enrichment with crystalline FAA. This genera is widespread in brackish water environments in temperate and tropical climates and has nauplii < 100 um that have been used successfully in the culture of grouper.