Mary Ann Thomas Monday, Sept. 30, 2019 3:28 p.m. | Monday, Sept. 30, 2019 3:28 p.m. The Pennsylvania Fish and Boat Commission confirmed Monday that an invasive species, the northern snakehead fish ...

Candy darters play an important role in nature because they eat caddisfly and mayfly larvae and are eaten in turn by larger fish. The species also plays an indirect role in keeping rivers clean by ...