How big can a salmon grow?

Atlantic salmon can grow to a very large size and the biggest, which have reached up to around 70lbs (32kg), are usually caught in Norway and Russia. However, some very large fish have been recorded in Scottish rivers. It is generally accepted that the largest one caught on rod and line in the UK was taken by Miss Georgina Ballantyne in the River Tay in 1922: it weighed 64lbs (29kg). There is an 1891 report of a huge salmon of 70lbs, also caught in the River Tay, but on this occasion in a net.