Why Do Trout Need Cold Water? It’s in Their Genes
Trout are from the family Salmonidae, which also includes salmon, char and even grayling and whitefish. All fish in the Salmonidae family require cold, clean water for survival. They evolved in richly oxygenated cold-water habitats in the Northern Hemisphere and are unable to survive when water temperatures rise and stay above 21 degrees celsius (70 …