 The study examined the effects of a plant-based diet on the growth performance and metabolic profile of rainbow trout. The researchers found that the plant-based diet did not have a significant impact on growth performance, but it did result in changes in the metabolite profile of the fish. Specifically, the plant-based diet resulted in increased levels of terrine, which is a biomarker of plant feedstuffs in the plasma of the fish. Additionally, the plant-based diet caused differences in the amino acid composition of the plasma and muscles of the fish, as well as in the amino acid composition of the livers of the fish. These findings suggest that the plant-based diet may lead to an imbalance in the essential amino acid supply for protein metabolism in the muscle and for specific functions of the liver. This article was authored by Catherine D. Board, Blondine Magyhunoum, Anik Mowing, and others.