Dream about dirty fish points at your erratic behavior. You keep putting some bad feelings aside which may become a bigger problem at the end. You need to verbalize and express your negative feelings in order to get on the path to forgiveness. The dream is an evidence for your desire for routine and normalcy. Someone is not being open about their motives or feelings.
Dirty fish dream indicates failure in gaining the admiration and respect of someone sought for. You are wasting your time on frivolous pursuits. To learn to prioritize and reorganize your tasks. This points to inner fears, insecurities and overwhelming circumstances. You may be expressing regrets for some past mistake.
If you dreamt about dirty fish:
You may not feel entirely comfortable with whatever approach you adopt today toward a loved one. There may be one particular issue that is a source of tension between you. If you want to continue with the relationship, you need to overcome your mistrust and start talking. It will be worth it.