Salvelinus Fontinalis, commonly referred to as the brook trout, is a freshwater fish species that is native to North America. Although the specific species name "Fontinalis" refers to its preference for clear, cold, and well-oxygenated waters that are often found in streams and brooks, there are several other synonyms that are used interchangeably with this fish name. Some of the common synonyms for Salvelinus Fontinalis include brook char, speckled trout, aurora trout, squaretail, and eastern brookie. These names reflect the fish's distinctive features such as its spotted skin, square-shaped tail, and its geographical distribution primarily in the eastern regions of North America.