A razorback sucker, Nevada1 Node 3 at Chaffey's Lock, in Lake Opinicon, Ontario2 Springbank Dam in 2006 (top) and 2008 (bottom), Thames River, London, Ontario3 4 5 Surgically implanting a radio transmitter into a shorthead redhorse, Thames River, London, Ontario6 Shorthead redhorse with radio telemetry transmitter, Thames River, London, Ontario7 Downloading telemetry data, Thames River, London, Ontario8 The black redhorse hatchery, Kitchener, Ontario9 Fertilized black redhorse eggs, Kitchener, Ontario10 An American toad, Kitchener, Ontario11 Reinstalling Node 1, Grand River, London, Ontario12 A redback salamander, Kitchener, Ontario13 A snapping turtle at the Mannheim Weir, Kitchener, Ontario14 Larval black redhorse, Kitchener, Ontario15 Larval black redhorse, Kitchener, Ontario16 Different models of radio transmitters and PIT tags17 A radio telemetry transmitter18 Closing the hydraulic gates_Springbank Dam19 A white perch, Welland River, Ontario20 A juvenile northern pike, Welland River, Ontario21 A fish detection system at the Conte lab, Turners Falls, Massachusetts22 Cabot Fishway, Turners Falls, Massachusetts23 Cabot Dam Spillway, Turners Falls, Massachusetts24 Alaska Steeppass fishway, Turners Falls, Massachusetts25 Fishing for smallmouth bass in the Grand River, Kitchener, Ontario26 Hidden Valley, Grand River, Kitchener, Ontario27 Hidden Valley, Grand River, Kitchener, Ontario28 Seining for fish in the Grand River, Kitchener, Ontario29 Seining for fish in the Grand River, Kitchener, Ontario30 A smallmouth bass from the Grand River, Kitchener, Ontario31 A rainbow trout from Big Bay, Georgian Bay, Ontario32 A northern pike from the Grand River, Kitchener, Ontario33 Seining for fish in the Grand River, Kitchener, Ontario34 Seining for fish in the Grand River, Kitchener, Ontario35 Rowing down the Grand River, Kitchener, Ontario36 Wading across the Grand River, Kitchener, Ontario37 Inserting a sonic transmitter into a razorback sucker, Lake Mead, Nevada38 Implanting a sonic transmitter into a razorback sucker in Nevada39 Transporting sonic tagged razorback suckers to Lake Mead, Nevada40 Valley of Fire State Park, Nevada41 Preparing to release razorback suckers in Lake Mead, Nevada42 Trammel netting razorback suckers in Nevada43 Close up of a razorback sucker, Floyd Lamb Park, Nevada44 Weighing a razorback sucker before sonic transmitter implantation, Floyd Lamb Park, Nevada45 Razorback sucker before sonic transmitter implantation, Floyd Lamb Park, Nevada46 Striped bass in Lake Mead, Nevada47 A goldfish caught in Floyd Lamb Park, Nevada48