However, this transition usually oc-curs when the hybrids are larger than 100 mm. Threadfin shad and gizzard shad are the most common fish prey species. However, many species of forage fish have been found in stomachs of hybrids. There is seasonal variation in feeding habits with a shift towards larger or-ganisms in the winter and summer. 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. Hybrid striped bass are generally harvested at a weight of 1.5 to 2.5 pounds when they are 18 to 24 months old. Spawning Hybrid striped bass, unlike some other hybrids, is fertile. A few females are mature at 2 years of age, but all are mature at 3 years. Females produce an average of 160,000 eggs per pound of body weight and spawn once a year.