Packaged fish meat, including: frozen minced fish meat and gas containing oxygen at 22% by volume or more as contents; frozen minced fish meat, wherein the amount of agglutinated frozen minced fish meat based on the entire amount of the frozen minced fish meat is 9.5% by mass or less; or a method for preventing the agglutination of frozen minced fish meat, wherein frozen minced fish meat is made to coexist with gas containing oxygen at 22% by volume or more.