What is fish sos?

As an AI language model, I cannot provide an opinion on the taste of any food item including fish sos but I can provide information on what it is.

Fish sos, also known as fish in soy sauce, is a popular Southeast Asian dish typically made by marinating fish in a mixture of soy sauce, garlic, ginger, and other seasonings. The fish is then fried or grilled until golden brown, and served with steamed rice and vegetables. Fish sos is often considered a comfort food and is a staple in many households. It can be made with various types of fish, including tilapia, cod, or catfish.