Which population was helped by invasion of zebra mussels?

The invasion of zebra mussels primarily benefited certain species of fish and aquatic organisms that thrive in their presence. By filtering large amounts of water, zebra mussels improve water clarity, which can enhance the growth of aquatic plants and phytoplankton, ultimately supporting fish populations. Additionally, some fish species may find increased food sources as small invertebrates and nutrients become more abundant in clearer waters. However, it's important to note that these benefits are often outweighed by the negative ecological and economic impacts zebra mussels have on native ecosystems and infrastructure.