In Korean tradition, dreaming of a shoal of fish is read as very auspicious. It is most often tied to 재물.
A shoal is wealth arriving in numbers — the fuller the net or tank, the better. Water dried up and fish dead, income cut off.
Tradition reads the symbol as an omen; psychology reads the same dream as a mirror of your present state. Describe your dream and both readings appear together. Interpret your dream