👉 Cuskfishes are small, brightly colored fish that live in freshwater ecosystems such as lakes, rivers, and streams. They are characterized by their distinctive white spots on their bodies, which are often used for camouflage or to attract mates. Cuskfishes are known for their ability to adapt quickly to changing water conditions, including changes in temperature and pH levels, due to their ability to change colors and patterns to blend into the surrounding environment.