To dream of an aquarium represents indifference to something you are noticing in your life. Fascination with people, situations, things about yourself that you have no interest in seriously involving yourself with. Noticing or being aware of how issues are effecting your life with little interest in exploring them personally.
Positively, dreaming about an aquarium may reflect your fascination or interest in observing problems you are perfectly safe from. Intelligently keeping yourself separated from something dangerous you are observing.
Negatively, it may reflect a lack of emotional involvement with problems you are noticing yourself or someone else experiencing. It may also represent being aware of how issues are effecting you, but being unwilling to confront them. Watching something dangerous or negative happening without caring about it.
Red or black fish inside an aquarium point to problems you are noticing in yourself and doing little about. It may also reflect bad habits or negative thinking patterns you are noticing yourself having. Indifference to situations or habits that are excessive, scary, or deceptive. Watching something bad, dangerous, or immoral happening and doing nothing to stop because it's more interesting to observe.
Example: A young woman dreamed of seeing an aquarium filled with white fish that were having babies. In waking life she was noticing herself desiring a boy she liked while doing everything to be closer to him without talking to him at all. The aquarium reflected her awareness of herself preferring to be infatuated with the boy while taking no action to pursue her romantic interest at all.
Example 2: A young woman dreamed of seeing a python get placed into an aquarium that was attacking or eating others animals. In waking life she felt indifferent to her friends beginning to not like her as she tried to do well in school and her part time job. The aquarium reflected her awareness and indifferent attitude towards her friendships beginning to suffer with her career ambitions being her first priority. She felt friends didn't matter as much as her future and felt uncomfortable watching her career ambitions "strangle" her friendships.
Example 3: A woman dreamed of seeing a developing baby in an aquarium that was close in age to a previous baby she had aborted. In waking life she was very sensitive about experiencing or observing herself surpass her previous pregnancy term record.
Example 4: A man dreamed of looking into an aquarium and seeing a big fish eat a smaller fish. In waking life he was observing his wife move from her initial stage of pregnancy to a much more sensitive serious stage. He felt she couldn't do anything except watch her. A common feeling for men with pregnant wives as they may not like not being able to take charge of the pregnancy like they would with other problems. They feel that all they can do is watch their wives deal with the pregnancy on their own.
*Please See Fish