From _The New York Times:
_Minnesota was looking for a bargain on the tiniest walleye fish, known as frylings, that the state stocks in some of its lakes. Wisconsin needed more of the longer fingerlings for its fishing lakes. So the neighbors have decided to share fish — Wisconsin’s frylings for Minnesota’s fingerlings — along with hundreds of other items: bullets for the police, menus for prisoners, trucks for bridge inspections and sign language interpreters. . . .
The sharing, officials in the two states say, could save them $20 million over the next two years.