I just wanna say this for the sake of debate, but fish were not specifically created as food for humans. Sure, our primate ancestors ate them too, but so do a lot of other animals and fish serve other roles apart from dinner in the natural world.

I eat fish and I have nothing against fish-eaters, but that doesn't mean that they are just here to serve as food for other animals.

I'm not sure if this is what you all were getting at, but I just wanted to put this out there