There are many possible approaches to this matter. Some were discussed in a PB mag article a few years back - about what you can do in ponds to reduce the catchability problem.

All LMB have the potential to have reduced catchability. Some more than others. These studies were about "Genetic Rescue" and measuring catchability. Some hatcheries have for years segregated out aggressive LMB to be used for broodstock. They are often northern LMB that are to be used with Fla LMB to create F-1s. They are called Tiger , Tigre , or other names. So the concept is not new to hatcheries. How do they do that ? By using the same methods as the studies. Fish the ponds and keep out the ones who are caught several times. Put them in a separate pond and growout. Repeat the process over time and you can have the aggressive offspring.

Last edited by ewest; 05/31/17 12:03 PM.