The vendor says they are purebred striped bass from a Mexico farm. Not a hybrid. The smaller growing hybrids (white = mother, striped = father) I can buy in FL 5x for $30 e.g. with $20 shipping from Live Aquaponics. These are approx. $100 each and the shipping is $120 from California airport to airport.
Yes, one must have a license to keep them.
In the first shipment they were tripled bagged in fogged up bags and milky water - I couldn't see anything. The drive home is about 45 min versus approx. 20 hours en route from Los Angeles to Ft. Myers.
Will see if I can keep them / some of them alive before thinking about the summers. I am having problems with them. Will report duly soon.