Samples of fish species Lutjanus synagris (lane snapper, pargo biajaiba or pargo rayado) and Centropomus undecimalis (Common snook, sergeant fish or robolo) from municipality of Covenas and corregimiento of Berruga in the Gulf of the Morrosquillo (Department of Sucre, northern Colombia), were collected to evalute therir pollution degree with polinuclear aromatic Hydrocarbons (PAHs), also called Polycyclic Aromatic Hydrocarbons. Analysis to detect residual concentrations of siteen posible PAHs in fish muscles were carried out with gas chromatography coupled by masses (GC/MS). Results showed 11,230 µg.kg-1 of PAH saverage total concentrations for Lutjanus Synagris (ranging from 0,004 to 145,596 µg.kg-1) and 8,596 µg.kg-1 for Centropomus undecimalis (ranging from 0,002 to 85,915 µg.kg-1) where PAHs classified as carcinogenic (venzo[a] pyrene, dibenzo [a, h] anthracene), showed a low frequency in the detection. This condition allows to consider that PAHsaverage values do not represent an immediate risk for human health, but it would be a potential one because of the bio-accumulation property of these pollutants. Thus, a continuous monitoring of this problema is recommended since it could become a risk for the environment and public health.