Very little is known about the Tobias caddisfly. In fact it wasn’t even identified and named until 39 years after it was last observed in the Rhine River in Germany. Hans Malicky was the entomologist who identified the Tobias caddisfly as a unique species in 1977 after observing specimens in a collection. In fact, nothing is known about its larval or pupal phases, as no specimens exist. The exact cause of the Tobias caddisfly’s extinction is unknown, but the urbanization and resulting pollution of Germany along the Rhine River are thought to be the main culprit. Caddisfly larvae are considered an indicator species in rivers and streams because they are highly sensitive to changes in water quality. When the river quality deteriorated, the caddisfly larvae would have been some of the first underwater organisms to be impacted. The Tobias caddisfly was last observed in 1938, marking its extinction. Although Jurassic Park is fiction, scientists are working on several de-extinction projects. In fact, in 2003 scientists did bring back the extinct Pyrenean ibex, a type of wild goat, for 7 minutes before it died, showing de-extinction is possible. The Tobias caddisfly might be a candidate. Some of the specimens observed by Hans Malicky in 1977 may still have enough DNA to bring this caddisfly species back. If the Tobias caddisfly was brought to life, could it ever be reintroduced to its native homeland in the Rhine River in Germany?