[shresearchdude]

An alternative to vacuuming the air out is to force the air out. After putting the fillets in freezer bag close all but a small corner. Get a bucket of water(cold) and submerge the bag until all the air is forced out and seal before you get water in there. I tend to put some saltwater in the bag before I dunk the bag-that way the only thing in contact with the fish fillets is saltwater or the sides of the bag. It works.