Legend tells that St. Neot’s Well (above) contained 3 fish, and an angel told St Neot that as long as he ate no more than one fish a day, their number would never decrease. At some point St Neot fell ill, and his servant went and cooked two of the fish. Upon discovering his servant’s error, St Neot prayed for forgiveness and ordered that the fish be returned to the well. As they entered the water, both were miraculously returned to life.
For further information, please read Haunted Britain by Antony D. Hippisley Coxe.