The freshwater leech Helobdella austinensis can eat its weight in snails every day, suggesting that leeches could be used to control freshwater snail populations — and the host of diseases they ...

A shocking new study shows that 90% of freshwater fish in Southern California may be carrying parasites that can infect ...

Parasites in California freshwater fish can cause gastrointestinal problems, ... leeching onto three hosts that include a freshwater snail, ... Some food prep is fishy.

The snail is now found in at least 17 states and Puerto Rico. Previous research by the same team found that the snail and the two trematodes have become widespread at freshwater fishing sites in ...