The objective of the present study was to investigate some biochemical aspects (tocopherol level, micro and macro minerals, heavy metals, lipid level, and fatty acid compositions) of shark sucker caught by trawl in April in 2011 in the northeastern Mediterranean. Shark sucker has got more than 100 mg kg-1 tocopherol levels. The predominant macro mineral, micro mineral, and heavy metal were P, Fe, and Pb with the values of 1369.45, 4.39, and 0.39 mg/kg, respectively. The levels of the saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), and polyunsaturated fatty acids (PUFA) were calculated to be around 30%, 25%, 40%. Additionally, the average levels of arachidonic acid (ARA, C20:4n6, ranged from 3.24 to 3.51%), eicosapentaenoic acid (EPA, C20:5n3, ranged from 3.28 to 3.93%), and docosahexaenoic acid (DHA, C22:6n3, ranged from 13.86 to 14.07%) in lipid of the shark sucker were found to be very similar that of many bony fish. Based on data, it can be considered that this present study showed that shark sucker showed some similarity to that of the regular consumed fish regarding its fatty acid compositions; however some certain differences were observed.