Allegheny white fish 

Used condoms floating on the rivers or streams of Western Pennsylvania.

One fisherman to another:"Catching any fish?"
Reply: "Nope. Nothing but Allegheny white fish."

Allegheny white fish by Pittsburgh Bob June 2, 2008

Allegheny whitefish 

A used condom floating in a river

Look at the Allegheny whitefish! or I was fishing south of Pittsburgh and snagged an Allegheny whitefish on my hook. Needless to say, the fish were turned off.

Allegheny whitefish by Rex Mundi 3 October 9, 2008