Dreaming of fighting with people in the water is a bad omen, which means that there will be major misfortunes in life.
Dreaming that you are fighting with others means that there will be a lot of trouble in interpersonal relationships in the near future, and friends around you will stay away from you because of some mistakes made by the dreamer.
Dreaming of others fighting in the water indicates that there will be small people around the dreamer and more attention needs to be paid.