After reaching a weight of about 0,2 gram, the fry starts to eat dry pellet feed, and grows quickly.

The fingerling develops dark spots in the skin (parr markings) and is still adapted to a fresh water existence.

Trout is harvested around 8 months, at a pan size of 500g. 

Rainbow trout is called steelhead trout when it's produced in salt water. Harvest weight is typically 4.5kg.