invasive fish species
- Smallmouth Bass and Chain Pickeral are non-native species introduced to the aquatic systems where the Atlantic Whitefish lives. These invasive species are eating and out competing local species, including the Atlantic Whitefish.

Barriers to fish Passage
- The construction and operation of hydroelectric dams on the Tusket and Petit rivers is thought to interfere with the migratory movement of the Atlantic Whitefish.
- Like other salmonids, Atlantic Whitefish are anadromous meaning they migrate from sea to spawn in freshwater. Restricting this passage has likely contributed to the specie’s decline.

