Smoltification

The physiological process undergone by salmonid (salmon and trout) fish to allow them to migrate from freshwater to seawater as part of their lifecycle.
Found on http://www.fishonline.org/glossary

smoltification

<marine biology> Suite of physiological, morphological, biochemical and behavioural changes, including development of the silvery colour of adults and a tolerance for seawater, that take place in salmonid parr as they prepare to migrate downstream and enter the sea. ... (09 Oct 1997) ...
Found on http://www.mondofacto.com/facts/dictionary?smoltification

Smoltification

Refers to the physiological changes anadromous salmonids and trout undergo in freshwater while migrating toward saltwater that allow them to live in the ocean.
Found on http://www.streamnet.org/glossary.html

Smoltification

a complex developmental transformation, involving physiological, biochemical, morphological, and behavioral changes, that allows young salmon (parr) to transition from living in freshwater to living in saltwater
Found on http://www.nmfs.noaa.gov/pr/glossary.htm
No exact match found