This study was conducted for natural radioactivity of some fish feed samples in Nigeria, using gross alpha and beta method with protean instrument corporate (PIC) MPC 2000DP detector. The range of the gross alpha concentration for the sample, for the Uranium series was 0.0246 ± 0.0051 Bq/g to 0.0028 ± 0.0055 Bq/g, similarly for gross beta concentration ranges from 0.0651 ± 0.0104 Bq/g to 0.0621 ± 0.0100 Bq/g for the samples. The annual effective doses of the activities for the three sample A, B, and C which were 18.56 μSvy-1, 10.91 μSvy-1 and 17.20 μSvy-1 respectively. The results appeared to be below the standard annual effective dose of 70 μSvy-1 for humans as recommended by (UNSCEAR, 1977 and 1982). This research shows that consumers of fish have no risk of radioactivity ingestion in to the food chain, even though no amount of radiation is assumed to be totally safe because radiation is known to trigger or induce cancer