When commuting fish need to get from home to work, their options are generally somewhat limited in a captive environment. This fish pipeline connects two fish tanks over a respectable distance (looks to be several tens of feet), allowing fish to travel from one tank, up and over the floor of a coffee shop, into the other tank. According to some of the comments in the article, the coffee shop in question is the now defunct Liquid Potion Lounge in Evanston, IL. One observer says: “They would often go up the tubes, but they’d rarely make it all the way to the other fish tank. I remember it being days before I finally saw a fish make it all the way across. Looked really cool though.” So, how does it work? From what I can tell, air gets pumped out of the top of the pipeline, drawing water up out of the tanks until the pipeline is full. Vacuum pressure then keeps the water from draining out. More pics of fish in the pipeline, after the jump.