MADISON, Wis. -

Eight of the koi in a garden on the University of Wisconsin campus are missing and police say they believe they were stolen.

UW police were called to Botany Gardens just south of Birge Hall on Lincoln Drive on Friday for a report of missing koi. Police said they determined someone had fished them out sometime between Thursday afternoon and Friday morning.

The staff said they found three bottles of beer in the pond when they noticed the fish were missing.

Staff said some of the fish are nearly a foot and a half long and had been living in the pond for more than 10 years.

"I've been here for 29 years," says Mo Fayyez, director of UW Botany Greenhouses. "I have seen that people, they (take) plants but never saw people taking fish out of the pond."

The missing koi are described as ranging in age from two to more than 10 years old, with various colored scales including grey, yellow, red, blue and orange. Some of the fish are speckled with all five colors.

The eight koi are valued at $1,600.

Anyone with information is asked to call UW-Madison Police at 608-264-2677.