Here is a southern answer. Guys very good fact sheet at these links.
http://srac.tamu.edu/fulllist.cfm SRAC 300 Hybrid Striped Bass: Biology and Life History
http://srac.tamu.edu/index.cfm?catid=12 Age and growth
Hybrid striped bass grow when water temperatures are above 15� C. However, optimum growing conditions occur when water temperatures are 25 to 27 C. Hybrids grow rapidly during their first two years of life. Growth to 275 to 375 mm in
length and 225 to 350 grams in the first year and 450 to 550 mm in length and 1 to 1.5 kg in the second year is common. Growth rate declines rapidly with increasing age and is similar in males and females. Maximum reported weight for a
hybrid striped bass is approximately 10 kg. The typical size of hybrids caught by fishermen generally ranges from 2 to 5 pounds, but fish in
the 10 to 15 pound range are not uncommon.
The usual life span of hybrid striped bass is 5 to 6 years-- more similar to white bass than to
striped bass (30 to 40 years). The growth rate of hybrid striped bass in production ponds is determined by several factors: water temperature, quality and quantity of food, palatability of food, frequency of feeding and water quality. Hybrid striped bass are generally harvested at a weight of 1.5 to 2.5 pounds when
they are 18 to 24 months old.
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