Want to report a trout or salmon with a missing adipose fin? It could have a Coded Wire Tag so there are special instructions you should follow! You can find those instructions here: Coded Wire Tags.
Marking programs are implemented for a variety of reasons, including estimating fish growth, mortality, exploitation, and movement. Your cooperation is an essential component of these programs, and successful fish marking programs will result in more abundant and healthier fish for the sport fishery.
Methods of externally marking fish include branding, tattooing, and optical pattern recognition. Internal tags or marks include both artificial and natural marks. Artificial marks include implanted wire tags, dyes on otoliths ("ear bones") or other hard parts, visible implants, and radio and ultrasonic implants. Natural internal marks include genetic marks, chemical / elemental marks, and biological marks (e.g., unique parasites, others). All of these various methods are used extensively, and each has unique advantages that are dependent on the goals of the marking program.
- Adipose-Clipped Chinook Salmon in Lake Superior
- Chemical Markers
- Coded Wire Tags (CWT)
- Commercial Trap Net Tags
- Fin Clips
- Passive Integrated Transponder (PIT) Tags
- Telemetry Tags
- Temperature / Depth-Recording Tags
- Yellow Spots on Chinook and Coho Salmon
- Jaw Tags
- Anchor Tags
- Coded Wire Tag Survey Ports
Department of Natural Resources