Space invaders: Searching for invasive Smallmouth Bass () in a renowned Atlantic Salmon () river.

Humans have the ability to permanently alter aquatic ecosystems and the introduction of species is often the most serious alteration. Non-native Smallmouth Bass () were identified in Miramichi Lake . 2008, which is a headwater tributary to the Southwest Miramichi River, a renowned Atlantic Salmon () river whose salmon population is dwindling.