Police at the University of Wisconsin, Madison, are investigating something fishy.
Authorities say that sometime between Thursday afternoon and Friday morning, someone made off with eight large koi fish from the campus garden pond. Only two of the pond's koi fish remain.
Animals have been ruled out as a possible culprit.
Police say the real head-scratcher is trying to determine exactly how the thief or thieves fished the koi from the pond and carted them away unnoticed. The koi are large fish -- some of them up to a foot-and-a-half long. They are different colors, including yellow, red, blue, orange or speckled.
The eight missing fish are valued at a total of $1,600.
Anyone who saw anything suspicious or knows about the koi caper is asked to call university police.