For the young woman the dream in which she sees a big aquarium with beautiful small fishes, means that she will marry the man of means. However it will be impossible to call this marriage happy as to understanding between spouses will not be. If in a dream you see that the cat tries to catch a small fish from an aquarium, however you do not banish it, then it is possible that your thoughtless behavior can become the reason of many problems for you and your relatives. If dreamed you that you change water in an aquarium, then in real life you are on the threshold of changes.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.