Salmon divergence. Salmon eggs are laid in freshwater streams typically at high latitudes. The eggs hatch into alevin or sac fry. The fry quickly develop into parr with camouflaging vertical stripes. The parr stay for six months to three years in their natal stream before becoming smolts, which are distinguished by their bright, silvery colour with scales that are easily rubbed off. Only 10% of all salmon eggs are estimated to survive to this stage. The smolt body chemistry changes, allowing them to live in salt water. While a few species of salmon remain in fresh water throughout their life cycle,
Joseph Salmon (publisher) Joseph Salmon (publisher) Joseph Salmon (1845 – 9 November 1923) was a British bookseller turned postcard publisher and printer, and the founder of J Salmon Ltd in 1880, the UK's oldest postcard and calendar publisher. He was born in the parish of St George in the East, in what is now Stepney, London, the son of Joseph and Maria Salmon. His father was a baker. In the 1881 census, he was listed as a stationer and printer, with five assistants and two boys working for him. He retired in 1898, and his son, also called Joseph, took over the family