Im hoping you guys can shed some light on this little mystery .I received a frozen trout to mount , once thawed it measured 77 cms (30 1/4 ins). Ive got the mount prepped and ready for paint , it still measures 77 cm .I just received a pic for paint reference , it shows the same fish fresh out of the water on a brag mat ( measuring mat) and its length is 80 cms . Somehow the fish has lost 3 cm in length .Any ideas why ? do fish shrink when frozen ? The fish was frozen for at least 12 months before i received it .Ive checked my measuring tape and have been assured the brag mat is correct .Ive never noticed this with other fish .Any suggestions appreciated.