The Brook Trout (Salvelinus fontinalis) is a species of freshwater fish in the char genus, native to Eastern North America. It is characterised by its distinctive olive-green body adorned with yellow spots and blue-rimmed red spots, white-edged fins, and a marbled pattern along its back. Brook Trout inhabit clear, cold streams and ponds, thriving in well-oxygenated waters. Their diet primarily consists of insects and smaller fish. Due to their popularity in angling, they have been introduced to various regions beyond their native range.