I wonder if the HSB are the Sunshine or Rainbow cross....Hybrid striped bass generally cannot naturally reproduce, so their numbers depend on the number of fish stocked. In the spring, hybrids may undergo spawning migrations to upstream areas into reservoirs in an attempt to spawn despite being sterile. The average lifespan is between five to six years. The HSB produced at Keo Fish Farm are sterile. The reciprocal, "Sunshine" cross can potentially get non-sterile hybrids, but I'd think it is rare or virtually all lakes and ponds stocked by states would not need restocking
