I posted earlier and have many types of pets. I’ll be straight here. If I had as many dogs or cats die as I have fish I wouldn’t be able to have dogs n cats anymore. Not legally mind you. I’ve not lost THAT many fish. But emotionally. I wouldn’t be able to take it. So for me, there is a difference. Although. If my Valentini puffer dies I may take bereavement leave from my job.
I miss my spotted puffer. He didn't die, I rehomed him to someone with a much larger tank. So much character.