Dozens of Koi Carp fish worth around �5,000 were stolen from a garden pond.
The theft happened in Bell Lane, Saham Toney, near Watton, between 11am on Wednesday, October 19 and 9.30am the following day.
More than 45 fish were taken after the thieves forced open a side gate leading into the garden and emptied the pond.
Officers are keen to speak to anyone who may have spotted anyone acting suspiciously in the area or who may have recently been offered Koi Carp for sale in suspicious circumstances.
Witnesses are asked to contact PC Carl Evans at Norfolk police on 101 or Crimestoppers anonymously on 0800 555111.
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