Parr, smolt and grilse are stages in the growth of which creature?
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Parr, smolt and grilse are stages in the growth of salmon. Salmon are anadromous fish that spend part of their lives in freshwater and part in the ocean. They go through several stages of growth, including parr, smolt, and grilse. Parr are juvenile salmon that live in freshwater streams. Smolt are young salmon that migrate to the ocean. Grilse are mature salmon that return to freshwater streams to spawn.
Parr, smolt and grilse are stages in the growth of a salmon. Parr is the first stage where the fry still have their distinct spots. Smolt is the second stage where the salmon undergoes physiological changes, enabling them to live in saltwater. The last stage is grilse, where the salmon return to freshwater to spawn.