i have had super tiger genes inmy Tibee line since 2013. The original F1 were attractive enough as they were a novelty at the time. When I came to F3/4/5 I had some good results but found that nearly all my giant gene shrimp were late bloomers for breeding. The females got berried but rarely carried their eggs to fruition. By the time they were 18 months old they bred very well for 6 months and gave me some nice babies. Unfortunately just as they were breeding well they died of old age 2-2 1/2 years old. When people came to my house and my shrimp room they were always amazed at the size of some of the shrimp -these were the giant gene shrimp. very notible next to ordinary shrimp. I went on to F10 but by that timre i lost my patterns and the shrimp reverted back to TB, CRS and Tiger phenotypes