Crayfish take more risks while on antidepressants, study shows Tue 15th June 2021 | 11:53 PM Crayfish exposed to antidepressants via contaminated water behave more "boldly," emerging from hiding more quickly and spending longer looking for food, a study said Tuesday Washington, (APP - UrduPoint / Pakistan Point News - 15th Jun, 2021 ) :Crayfish exposed to antidepressants via contaminated water behave more "boldly," emerging from hiding more quickly and spending longer looking for food, a study said Tuesday. The paper, published in the journal Ecosphere, highlights the unintended impacts human medicines can have in aquatic environments, as they alter food web dynamics and ecosystem processes.