ODFW researchers are evaluating a range of fish marking methods using Oregon chub. Visible Implant Elastomer (ViE: an injectable colored plastic) was found to produce an effective mark. Vie was used successfully to document fish migration patterns in 3 river sub-basins. The VIE marks persisted for at least 3 years. Resource management and recovery operations need a way to track the movement of free-range fish. This requires a method of tagging or marking the fish-- however, reliable methods to track smaller fish are lacking.
Bangs, B.L., Falcy, M.R., Scheerer, P.D. and Clements, S. 2013. Comparison of three methods for marking a small floodplain minnow. Anim. Biotelemetry 1(18).
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