What is the fish symbol in Judaism?

Fish symbolim in Judaism

The fish symbolizes fertility and is commonly used as a fertility amulet.
In Judaism, sometimes Sephardic Jews (a subgroup of Jews originating in the Iberian Peninsula), use the symbol of a fish in their household to repel the Evil Eye.
This originates from the Talmud - where it is stated that fish are immune from the evil eye because they are under water, making a fish an effective amulet!