This technique used algae-a natural raw ingredient as novel functional aquafeed additives, as replacement for fish meal in nutrition sources, a fish oil replacement in the feed, an algae strain contains unsaturated fatty acid can change level of serotoninblood cortisol in fish brain, decrease their cannibalism rate. This technique can reduce feed production costincrease harvesting rate.

Scientific breakthroughs in this technique are algae strain FSP-E can increase weight gain of fishes compare to plant protein,substituted 20 of animal protein in feed, algae strain MS-C1SU-9 can completely replace fish oil as attractant in feed, algae strain BL10 can change the brain serotoninblood cortisol concentration,lower 10 cannibalism rate in fishes.

This technique using algae proteinattractant to replace animal raw materials can lower feed costs,unsaturated fatty acid in the algae reduce cannibalism rate in fishes, increase 23 of fish farmers income. This technique has entered trial mass production stage, with adjusting different parameters, it can link up to production line to produce multiple functional natural feed.