"J'aime le poisson."

Translation: I like fish.

[brianberwick]

Why not I like the fish ???

[Sitesurf]

Yes, it is now possible for a context like: "I like the fish but the vegetables are overcooked".

[AtticusRab]

Why not "du poisson?"

[Sitesurf]

If you like fish, you like it as a whole category of food, not "some fish".

With appreciation verbs (aimer, aimer bien, adorer, apprécier, préférer, détester, haïr, respecter, admirer), the direct object gets a definite article because the object is general by nature.

[Neron5]

Why not i love the fish? I am not a native speaker. Is it possible to say so in English?