F-1s have been in use for many years. Not one study that I have read nor any report from the lakes has indicated an issue with outbreeding depression in their natural integrated zone. My 2 cents is that Fla and northerns are so close genetically (not like 2 distinct species such as BG and GSF)that they don't exhibit outbreeding depression. That does not mean that any isolated fish population without new genes will not show genetic problems over long time periods.That is a result of inbreeding.

Last edited by ewest; 02/05/17 04:03 PM.