Sorry but you’re just plain wrong. And probably lying about the number of aquariums, hundreds would be a lot of work, like pretty much every waking hour. Not to mention the cost.
Oh and the expected lifespan of the fish in question is between 85 and 105 years depending on gender. They have an expected lifespan because they age.
I own a tropical fish store. Have studied fish and been raising them for 50 years. Sorry but you’re just plain wrong.