No, fish oil is not vegetarian. Fish oil is derived from the tissues of oily fish, making it an animal product. Vegetarians who avoid consuming meat and fish would not include fish oil in their diet.For vegetarians and vegans, Tahiro's Omega-3 supplements offer an excellent alternative. Our supplements are derived from algal oil, a plant-based source of Omega-3 fatty acids. Algal oil provides both DHA, EPA & DPA, the same beneficial fatty acids found in fish oil, but without the use of animal products.