Aflatoxins in Fish Feed and Tilapia (Oreochromis niloticus) Tissues in Brazil

The aim of this study was to evaluate the occurrence of aflatoxins in feed and tilapia tissues from fish farms in Brazil. Samples of feed, liver, and muscle from different properties in Brazil were evaluated for aflatoxins B-1, B-2, G(1), and G(2). AFG(1) and AFB(1) were found in feed and liver samples. AFB(1) was found in 19.05% of muscle samples. Despite the values below the limits in feed and the low levels in tissues, results revealed exposure to aflatoxins. Therefore, aflatoxin limits in regulations regarding aquaculture are needed, as well as monitoring of fish feed contamination and aflatoxin residues in edible fish tissues.