vs
QUICK ANSWER
"Pescado" is a form of "pescado", a noun which is often translated as "fish". "El" is a form of "el", a definite article which is often translated as "the". Learn more about the difference between "pescado" and "el" below.
el pescado()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
1. (culinary)
el()
A definite article is a word that identifies a noun as specific or known to the speaker (e.g., the girl).