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<br />Another fish had no visible injuries but was in respiratory arrest (not gilling) due <br />to extreme tetany from prolonged exposure to tetanizing currents after being trapped <br />under a live anode for 15-30 seconds while the boat was stuck in shallow water. The <br />fish remained tetanized for several minutes but was resuscitated by moving it <br />repeatedly through flowing water for about 10 minutes until it regained opercular <br />movement. It was then held in flowing water for several more minutes until it regained <br />orientation and respiration resumed at a normal rate. It is unlikely that this fish would <br />have recovered without intervention. Radiographs revealed no abnormal vertebrae. <br />The third fish with external injuries was caught while in electrotaxis toward a cathode <br />and was bleeding from the gills. It had no other visible injuries and radiographs <br />revealed no vertebral abnormalities. Three other fish were also captured while in <br />electrotaxis toward a cathode: one was uninjured, one had acute vertebral injuries, and <br />the other had minor congenital/chronic vertebral compressions. Even with the injuries <br />described all fish regained orientation, behaved normally, and swam away at release. <br />An interesting observation on the White River was a Colorado pikeminnow found <br />dead by an electrofishing crew in a reach that was electrofished the day before. The <br />carcass was starting to exhibit rigor mortis, the skin and scales were in good condition <br />but were starting to discolor, and the eyes were clear and natural, indicating fairly <br />recent death within the past 24 hours. The fish had no signs of external injury and the <br />cause of death was unknown, but it was not likely caused by angling because there <br />were no signs of hooking injury and it was retrieved just downstream of Taylor Draw <br />Dam in an area closed to fishing. Examination of the carcass at the Colorado Division <br />of Wildlife, Fish Health Facility in Fort Morgan did not reveal cause of death (W. <br /> <br />10 <br />