1. antioxidant properties: walnut oil is rich in antioxidant substances such as vitamin e and squalene, which helps to improve the antioxidant capacity of human body and prevent free radicals from causing harm to human body, while fish oil has low antioxidant content.

2. Land source: Walnut oil comes from land plants, and fish oil comes from marine fish.

3. Taste and eating method: The taste of walnut oil is relatively light, and there is no special fishy smell like fish oil. In addition, walnut oil can be directly used for cooking and seasoning, and the use method is more flexible, while fish oil is usually sold in the form of capsules or soft capsules, which need to be swallowed, so it is not convenient to use.

4. To sum up, walnut oil is good.