Often fish can’t swim where they need to go because dykes and dams are in their way. That is one of the reasons why the fish lay less eggs and eventually can go extinct. The tube we have invented goes straight through the dam to give a way to the fish. There are camera’s installed at both sides of the tube and also a mini robot in the tube that gives a signal if a fish gets stuck. Last but not least, researchers can learn more about the fish going through the tube via an App called the Fish Finder.