Selected chromatograms from fish samples processed on day 56 from the control, Firemaster BZ-54, and Firemaster 550 treatments (Chemtura). All extracts were measured with gas chromatography-electron-capture negative ion mass spectrometry. The 2,3,4,5-tetrabromo-ethylhexylbenzoate (TBB) and its brominated metabolites are noted. BDE=brominated diphenyl ether; I.S.=internal standard.