Get a report of unique fish

From PTAGISWiki

Interrogation summary queries often return results that include multiple records for individual fish. In order to get a count of unique individuals, you will need to refine your query results using a registered tag list.

The first step is to create a registered tag list from the report file that is generated by your query.

Then go to My Registered Tags, select the tag list and click the Filter Duplicates button.

This will create a new registered tag list that contains unique tag codes and the count shown in the Tags column will represent the unique fish in your query.