| analysis of fin clips as a nonlethal method for monitoring mercury in fish. | monitoring of mercury in fish typically involves removal of individuals from the sampled population and subsequent analysis of fillets. this study assessed whether the analysis of fins, structures routinely clipped to mark released fish in population studies, could provide a nonlethal approach for estimating mercury concentrations in axial muscle (fillets). we analyzed fillets and selected fins from 401 northern pike (esox lucius) and 79 walleye (sander vitreus) from 21 lakes in minnesota and wi ... | 2008 | 18323115 |