Fish meal (FM)was partially replaced by soy protein concentrate (SPC), squidmeal and a defatted algalmeal from
Haematococcus pluvialis in low-fish oil (FO) diets for longfin yellowtail (Seriola rivoliana). A 50% protein/15% lipid,
FM-based diet (FM100) was used as a Control, and four experimental diets were formulated replacing FM with
SPC, squid and H. pluvialis meals at levels of 25% (FM75), 40% (FM60), 60% (FM40) and 80% (FM20).