High growth rates in Atlantic salmon (Salmo salar L.) fed 7.5% fish meal in the diet. Micro-, ultra- and nano-filtration of stickwater and effects of different fractions and compounds on pellet quality and fish performance.

► Very high Atlantic salmon growth with diets containing 7.5% marine protein sources. ► The fish meal soluble protein quality affects fish performance and pellet quality. ► Hyp or tau supplementation in low fish meal diets does not affect salmon growth.