In this study we explore the inter- and intraspecific variations in ecological stoichiometry of three dominant fish species [ Saurida tumbil ( n = 33), Pennahia macrocephalus 34), Upeneus sulphureus 32)] from Beibu Gulf, contents carbon (C), nitrogen (N), phosphorus (P), calcium (Ca), δ 13 C, 15 N fishes were analyzed. Results illustrated that ranges elemental (C, N, P, Ca) 36.73∼49.24%, 8.79∼1...