Green sunfish, Grand River, Kitchener, Ontario1 A white sucker with an external radio tag being attached in Pickering, Ontario 2 A white sucker with an external radio tag attached in Pickering, Ontario3 A largemouth bass (top) black crappie (middle) and a bluegill sunfish (bottom) in the Grand River, Ontario4 Preparing to track brook trout and brown trout by helicopter in the Alberta Rockies5 Grand River in flood, Mannheim Weir, Kitchener, Ontario6 Grand River in flood, Mannheim Weir, Kitchener, Ontario7 Grand River in flood, Mannheim Weir, Kitchener, Ontario8 Grand River in flood, Kitchener, Ontario9 Northern hog sucker, Grand River, Kitchener, Ontario10 Rock Bass, Grand River, Kitchener, Ontario11 Possible pumpkinseed bluegill hybrid, Grand River, Kitchener, Ontario12 Brown bullhead, Grand River, Kitchener, Ontario 13 Shiners at the base of the Mannheim Weir fishway, Grand River, Kitchener, Ontario14 Shiners caught in a fishway trap, Mannheim Weir, Kitchener, Ontario15 Shiners, Mannheim Weir, Kitchener, Ontario16 Smallmouth bass being tested for sex, Grand River, Kitchener Ontario17 Coralling fish in the Mannheim Weir fishway, Kitchener, Ontario18 Externally radio-tagged smallmouth bass, Grand River, Kitchener, Ontario19 Fin clipping a pumpkinseed, Grand River, Kitchener, Ontario20 Externally radio tagging a smallmouth bass, Grand River, Kitchener, Ontario21 Down at the Mannheim Weir22 Smallmouth Bass with external radio tag, Kitchener, Ontario23 Recovered external radio tags, Kitchener, Ontario24 Externally tagging a salmon, Newfoundland25