Can't mentally decline if you were never sound of mind in the first place!

No mention of the rate? Or the rate in non-police officers? I'm seeing an increasing amount of articles quote raw numbers rather than anything statistically meaningful, I agree with the sentiment of the article but it's veering towards rage-bait territory.

Nobody is saying that fish are moral agents that can empathise with other beings. That doesn't man that they're not moral subjects; the ability to understand that one is causing harm is not a prerequisite for the ability to suffer oneself. I think everyone knows this intuitively, but it does feel good to have our less moral habits be justified by memes that we would otherwise find to be illogical.