The use of surgically implanted radio transmitters in fish is widespread. There are, however, some questions concerning retention time of transmitters and effects on fish health. I serendipitously recovered a large adult muskellunge implanted with a radio transmitter for 13 years. Although a large fibrous mass was associated with the transmitter, this ripe female otherwise appeared to be disease-free.
Catch and Release Muskie Fishing – Let Them Go – Let Them Grow