Voted Best Answer
Jan 27, 2022 - 05:43 AM
More generally, you always use the definite articles "el/la/los/las" when speaking in general in Spanish, unlike in English, hence "no le gusta much el pescado" with an article.
In the second phrase there's no article in Spanish because we're not speaking about meat in general, but about a certain quantity of meat, "some" meat. More generally, when you can use "some" in English, usually there's no article in Spanish, hence "quiere comer carne" without any article.