These two data files (Sex-specific THg muscle; Lionfish THg tissue) contain total mercury concentrations from lionfish tissues obtaoned uisng a direct mercury analyzer (Milestone DMA-80). Lionfish THg tissue: Sex - Sex of fish: 0 = male, 1 = female Liver - THg concentration in liver tissue Ovary - THg concentration in ovary tissue Fat -THg concentration in adipose tissue Muscle - THg concentration in muscle tissue Sex-specific THg muscle Specnum - Specimen ID number (unique for each fish) SL - Standard length (mm) TL - Total length (mm) WGT - weight (g) Sex - Sex of fish M = male, F = female THg - Total mercury concentration Location - loctaion of capture