This is an unlikely option to our summer flounder situation but it's an interesting concept. If you are ever in the Galveston, Texas area and are looking for a diversion, try going to the Sea Center at Lake Jackson and see the flounder hatchery process. It is quite enlightening. The breeding and hatching are done under very controlled conditions which include the amount of light and salinity that affect the reproductive cycle. The largest fish in each of the tanks are females which are surrounded by many attentive smaller males. It's a very informative tour of a hatchery that is also producing redfish and sea trout to replenish the Texas estuaries.
Can it happen here? I doubt it, but it is happening in other places.
https://www.youtube.com/watch?v=TV5Usc5BhWk