Switzerland. Canton Vaud. AQUATIS Aquarium-Vivarium Lausanne, a living museum on the theme of fresh water. A spotted gar, an American paddlefish and various sturgeons swim and cross each other. Spotted gar have an elongated mouth with many needle-like teeth to catch other fish and crustaceans. The American paddlefish (Polyodon spathula, also known as a Mississippi paddlefish, spoon-billed cat, or spoonbill) is a species of ray-finned fish. Sturgeon is the common name for the 28 species of fish belonging to the family Acipenseridae. 21.11.2023 © 2023 Didier Ruef