Dream about fish in mouth represents your thick-skinned nature. You are having difficulties expressing your real feelings. There is something that you need to prepare for. It indicates your desires for political office or your interest in world affairs. You do not to make the same relationship mistakes that ended a relationship.
Fish in mouth dream is a sign for feelings of insecurity or doubt. There is something that you need to take-ou or take-away from your life. You need to back off or retreat from a situation that you are currently facing in your life. This suggests purification and self-renewal. Perhaps you need to rid yourself of the negativities in your life.
If you dreamt about fish in mouth:
If you have something that you know you and your partner (current or prospective) need to talk about, but aren't quite sure how to go about it, then your intuition may be telling you that it is better to forget it altogether. But if you can get the right perspective, this could make a great deal of difference.