I have been a offshore charter captain( retired) for a long time and have a way to process any kind of fish, fresh or saltwater. First we add lots of ice, then add enough water to make a slush. Then add enough salt to make it very salty. This will drop the water temp around 32 deg. Chunk the fish in alive as you catch them. This will set up hyperthermia in the fish causing the blood in the fish to go into the organs and out of the flesh,death is quick and after awhile when you clean them all the blood will be in the innards not the meat, causing better tasting fish, this method is used by commercial folks on tuna that will be sushi grade.... Try it and good eating
Pat
