Hey Guys,
They are definitely grow out in an aquaculture setting and if you go to this link and scroll down to the following there should be ample information:
http://aquanic.org/publicat/usda_rac/efs/srac.htm Red Drum
# 320 - Red Drum: Biology and Life History PDF (28k)
# 321 - Red Drum: Site Selection and Pond Construction PDF (44k)
# 322 - Red Drum: Production of Food Fish PDF (51k)
# 323 - Red Drum: Brood Stock and Hatchery Production PDF (47k)
# 324 - Red Drum: Production of Fingerlings and Stocker PDF (836k)