In addition, increasing environmental concern on the role of the small pelagic species in the marine ecosystems and resources for seabirds has led to restrictions on the fishery. The move away from well-known and safe ingredients to new ones has many challenges (Figure 4). Partial replacement offish meal and fish oil with vegetable ingredients has been continuous and rather successful in the farming of salmonids. We want to address focus to three of these sources, (1) Aquatic sources, (2) Agriculture sources and (3) Biotechnological sources.