An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Concept Breadcrumbs

Preferred Term:


Adolescent salmonid fish which have lost their parr marks and have developed a silvery coloring on the body. Smolts are physiologically adapted to a marine environment and are ready to begin migration to saltwater.
Concept Schemes:
Broader Concept:
Download this Concept:
RDF/XMLCreated 2008-08-11, last modified 2012-11-30