Ok, ehhhh. I'm from México so I speak spanish since I was born.
I think is "Comes"
Now let me explain. The correct question is "¿Tu <u>comes</u> pescado?" or "¿Tu <u>comes</u> pescado?" Is not with "el" because it sounds very forced, I don't know how to explain.
The answer:
¿<u>Comes</u> tu el pescado?
Have a good day ;)
Answer:
1. Tú
2. Usted
3. Usted
4. Tú
Explanation:
I answered like this because is depending of the relationship between the subjects, I hope is ok, good luck! ⚡️
El condicional es quer<span>ríamos.</span>