Vegetarians don't eat meat. If you ever come across someone who eats fish and says they are a vegetarian just know they are ignrant to the definition of a vegetarian. Fish isn't vegetation, hence the word vegetarian. They would be considered pescatarians
Those people aren't really vegetarians, whether they call themselves that or not. The term for them is pescatarian, or piscivore. It is indeed meat. I, as a REAL vegetarian, am offended by those people who misrepresent themselves in that way.