The researchers analyzed the nutritional components in Ongchostoma sima fish. They found that the fish muscle contains high levels of protein, essential amino acids, EPA, and DHA fatty acids. The essential amino acid index was 64.85, indicating good nutritional quality. However, tryptophan was identified as the limiting amino acid in O.sima muscle. Overall, O.sima is a nutritious fish with beneficial amino acids and fatty acids for human health.