The northern pike (Esox lucius) is a widespread and iconic predatory fish in the UK, found in freshwater habitats such as lakes, rivers, and canals. Recognised for its elongated body and sharp teeth, the pink is a top predator, playing a critical role in maintaining ecological balance by controlling populations of smaller fish. It is also a favourite among anglers, valued for its size and fighting spirit. While common in the UK, pike populations can be sensitive to habitat changes and water quality.