I said no such thing. I said the supposed ethical problems with eating animals referenced by OP are not ones I think apply to most animals, and so it is ethical to eat them.
What "supposed" ethical problems are you referring to that you're hand waving away then? That farm animals are cute? How about overfishing, destruction of marine environments, bycatch, pollution caused by and left in the sea by fishing, evidence that fish feel pain and that some are proven to have more complex intelligence than other animals.
That's not really how ethical problems work. They are supposed to define why we should or shouldn't do something. Even saying "nah dawg, fish tasty" would be more reasoning than you've provided.
You've not provided any reasons sufficient for me to consider eating fish or meat unethical. The issues you mentioned are ones I consider morally irrelevant to the ethical nature of eating these animals, and so I reject the claim that it is unethical.
So, you consider it ethical to bycatch, fish species to extinction, destroy marine environments and pollute the ocean freely despite there being ample alternatives to receive the nutrients you can get from fish? Please explain how these are irrelevant. Unless you personally catch each of your fish?