I don't know where this guy came up with "Gorilla". The "Tiger bass" is what American Sportfih has starteed calling their F1. WHy b/c they have selected the most agressive northerns and the fast gorwing floridas for the last 15 years to create their F1's. Lots of folks now producing F1's and they wanted a term to describe theirs since it is simply not just any northern and florida mix. I just picked up 3800 last week and will be picking up 2800 tues. I have used them for 4 years and strongly suggest their stocking when wanting to grow big bass in the SE.