I released the fish. Can I still eat the fish?

Giving up killing is a big deal, which is different from making a wish. Your release shows that you have compassion. If you can be a vegetarian in the future, eat more. Otherwise, if you let it go here and kill it there, won't your merits and demerits be offset? Of course, if you can't eat vegan, you still have to eat meat. You can choose to eat three refined meats, even if it is to kill fish. Even when it is inevitable, maybe you should make more confessions in due course.