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It doesn't really affect the weight but it does affect the length of the fish as they tend to shrink when frozen.
frozen fish ways less. had this debate with a buddy the other day on the ice. he called his mother who teaches physics at a local college. i cant give you the exact details but somethng about water crystals exploding or something that makes them weigh less. take a cup of water and wiegh it. then freeze it and weigh it agian.
Please post the college where she teaches so I can be sure my grandkids cross that one off their list.
Has to do with water I guess. Water is the only liquid whose molecules weight less as they get close to freezing (actually start weighing less at 39.2 F). This is why (lucky for the fish and ice fisherman!!) ponds freeze from the top down rather than the bottom up. You'd think someone had a master plan there, ehhh? Cya.....
Water has it's greatest density at 39.2 F and begins to sink, it doesn't start weighing less, ice is less dense than liquid water at any temperature that mother nature can produce, so it floats. In a lab supercooled water can stay liquid well below 32 degrees F. Learned this in a college chemistry class.
You are correct-heaviest at 39.2 and then it starts weighing less as it gets colder "floating" to the surface to freeze. Think we are saying about the same thing. Cya.....