Water flea cultivation (IMAGE) Ruhr-University Bochum Caption In Bochum, researchers cultivate water fleas in vitro. They let some of them grow with carnivorous plants, others without. This approach allows them to compare the water fleas’ adaptations. Credit RUB, Marquard Usage Restrictions The image may only be used for reporting about the work by Martin Horstmann at Ruhr-Universität Bochum. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.