Fishing Guides Collect Data for University of Idaho Steelhead Research

Fishing Guides Collect Data for University of Idaho Steelhead Research

Will Lubenau, with the University of Idaho, recently posted an update on their steelhead tagging study.

One of the primary reasons for doing this study is to understand how many wild steelhead are caught in Idaho. When a tagged fish is caught, the visible tag is typically removed and reported to the Idaho Department of Fish and Game. Using the number of tags put out and the number caught and reported by anglers, we can estimate how many wild fish were caught statewide. But, you may be thinking, if most tags are removed when a fish is first caught, how do you know if a fish is caught twice? This could be important to understand since, if a fish is caught twice, it may be less likely to survive. Well, we developed a way to get information on this question.

Each study fish is tagged with two tags. One tag is orange and visible to anglers and the second is a PIT tag placed inside the body (for more information on PIT tags click HERE). Both the tags can be used to identify an individual fish. It is like a person having a driver’s-license number and social-security number. The PIT tag provides a way to identify an individual fish after the visible tag is removed.

IDFG has used guides for many years to collect samples from steelhead harvested on their trips.  For this study we gave a number of guides in Idaho a handheld PIT-tag reader that can detect the tag inside the fish. This allows guides to quickly detect a tag and release the fish.

When a tag is scanned, the reader provides a number that can be traced back to an individual fish. The guides have done an awesome job scanning the fish they and their clients have caught. Through their effort we have added 150 PIT tagged fish to our catch and release data. In addition, if they caught a study fish that had an external tag, they were asked to report it but not remove it from the fish so that if the fish was caught again the next angler could report the external tag. As a result, there has been a total of 65 study fish that have been caught and released with a tag that were available to be caught a second time. Of the 65 Fish, 18 have been caught and reported a second time. With this information in hand, we have now documented fish with multiple catch and release events and can incorporate that information into the study.

Remember, this study is going to be repeated over the next steelhead run. Conducting the study over a two-year period allows us to incorporate year-to-year changes in our steelhead runs into the study. When you get out in a few months to catch some steelhead, be sure to look for an orange tag near the dorsal fin of all caught fish!

We would like to encourage anyone that needs to report a tag to do so immediately at! Reward tags must be returned directly to IDFG to claim a reward. A big thank you to all the guides that have helped with this research and to all the steelhead anglers that have reported tags! Look for more updates on this project later this summer as we start in on the second field season.

For more information on IDFG’s Wild Salmon and Steelhead Program click here to visit the Wild Salmon and Steelhead Webpage


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Don McDowell, Arizona native, is an avid outdoorsman and has been an active bass pro fisherman for over 16 years and in the past 15 years has developed his own radio show promoting bass fishing and conservation efforts for bass fishing that escalated to nominations with several bass groups and organizations. In the past 12 years, Don has pursued his conservation agenda through AZBFN-TBF as Conservation Director and with the Arizona Game and Fish Department, in the spring of 2014 redesigned his website to include those efforts highlighted below and has increased the AZGFD exposure, public education of the AZGFD and Commission issues on his radio show and website soliciting local and national support for Arizona. 2014 has seen the founding of SRT Outdoors, Inc., 501 C3 organization, “Not for Profit, for Conservation” which is concentrating on grants for mitigating the effects of Gizzard Shad on Roosevelt lake thorough habitat enhancement, Florida Strain Bass stocking, lakes bottom mapping, etc. and feral hog research.

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