noun (plural same)
A young salmon or trout between the stages of fry and smolt, distinguished by dark rounded patches evenly spaced along its sides.
- There is significant shift in the MHC composition of trout red muscle between parr and smolts.
- Salmon parr in the wild will naturally come across patches of substrate of similar color to the marble chips used in this experiment.
- Quantitative analysis of duty cycle shows a significant increase in duty cycle at each position between parr and smolts.
Early 18th century: of unknown origin.
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