To really bring it back on topic;
Many years ago I played guitar in a metal band. It was as loud as you would expect a bunch of guys who loved high wattage equipment to be. We practiced at the drummer's house, above where we practiced he bred oscars. Breeding fish are generally considered to be happy fish, unless his fish were into loud heavy metal music.
A buddy of mine deals with imports, 24 hours from the Amazon to his tanks. He lives a couple of blocks from a major airport, right under a flight path. You have to stop talking for several seconds when a commercial air liner flies over. They blow the trees around as they pass, you can feel a nice strong breeze after they go by, that close. Many tanks in his garage, thousands of neons at a time, among other rather sensitive fish. The survivability rate is amazingly good, the shops love him.
Fish get acclimated to sound just like any other animal, dogs & cats in the city get used to the noise, I've worked in several shops with loud equipment where they had a shop dog. ATM it's a Siberian Husky that sleeps a few feet away from a large hydraulic paper cutter.