> Inherently it’s no less ethical for us to eat them than it is for them to eat fish
Ignoring the farming and catching practices used to get most octopuses from the sea to the plate, which most certainly are unethical since they are unnecessary and cruel, and only look at "eating another being", I still think you are missing the point that octopuses has to eat the fish to survive since they are mostly carnivore's and don't have modern farming practices and supermarkets available, whereas we are omnivores and have those things available where we can get all the things we need from non-animal products.
I say that makes a big difference between us and octopuses eating fish, not to mention the fact that as far as we know, octopuses are not capable of understanding ethics like us, which also makes a big difference (if it were unethical for the octopus to eat fish, which it isn't since it needs it to survive). Just like we don't blame a human baby for unethical behaviour, but still hold ourself up to ethical scrutiny.
Ignoring the farming and catching practices used to get most octopuses from the sea to the plate, which most certainly are unethical since they are unnecessary and cruel, and only look at "eating another being", I still think you are missing the point that octopuses has to eat the fish to survive since they are mostly carnivore's and don't have modern farming practices and supermarkets available, whereas we are omnivores and have those things available where we can get all the things we need from non-animal products.
I say that makes a big difference between us and octopuses eating fish, not to mention the fact that as far as we know, octopuses are not capable of understanding ethics like us, which also makes a big difference (if it were unethical for the octopus to eat fish, which it isn't since it needs it to survive). Just like we don't blame a human baby for unethical behaviour, but still hold ourself up to ethical scrutiny.