. Maybe you saw the thread I made when I started thinking about setting up my tank with longevity in mind rather than instant success. Maybe not.
No, unfortunately I didn't see it. But I don't see a lot of things. I thought a long time about this and always wondered why so many people have so many problems with this. I can see having more problems with corals because they are very dependent on water conditions, temperature and lighting, fish are not and can live in a wide variety of conditions.
I also believe, as I mention to much that a fishes immune system is much better than ours. I of course am not a Doctor or play one on TV but it seems like common sense to me that fish are in contact with everything in the sea and evolved in it and the sea, if anything is more polluted now than it has ever been. But in the millennium since fish have been here no one has messed with their immune system "in the sea."
We humans on the other hand are no where near what we were a million or even a few hundred years ago. Modern methods of killing disease and all the medications and irradiated and sterilized foods we eat along with our clean water has helped keep us healthy, but at the cost of our immune system which doesn't have to work as hard to keep us healthy now that we are not exposed to Plague, Small pox, Polio, dirty food, water etc.
We now cook our meat and fish so there are no pathogens. Pathogens that our ancestors immune system used to deal with naturally.
It is something that we had to do because we were dying and that is progress as no one wants to die from those things.
But we were dying from them because we invented travel.
Before we traveled we went as far as the nearest Wolly Mammoth for a hamburger, then went home to smack our mates who then called a lawyer and after a lengthy court battle, owned our cave.
But we were immune from any diseases where we lived because we were born with an immunity that we inherited from our Mother.
Now a kid in Hunan China eats an infected bat that he bought at "Bats R US dot com" and his sister wants to go to school in Brooklyn New York so she borrows money and comes here where her room mate who is from Poland contracts Covid 19 and we know the rest of the story.
It was the same with Bubonic Plague which came on rodents through the silk road from China and killed a third of Europe.
Small pox was in Europe and when the Europeans came here to invent Amazon, they brought it with them and killed almost all of the native Americans who had no immunity.
These things didn't happen when we stayed put.
Fish don't have that problem because the oceans are well mixed. They only have problems when they are confined, starved, heated, cooled and bullied or filleted where they can't get away.
Then the dealer puts them in water with copper which as I said will kill or limit parasites and bacteria but do nothing for funguses and viruses.
We buy the fish and as soon as we get it home we see spots, rotted fins, pop eye and the thing is pooping in psychedelic colors while doing a head stand and we don't know why. So we use more medication rather than trying to reverse the original medication that caused the problem in the first place and we make different problems.
I find this hobby very simple, but I am a simple guy.
Of course the LFS has to medicate the fish because the fish are under stressful situations, but it should end there and allow the fishes immune system to be strengthened so it does it's job. Some fish may die, but some fish will die no matter what you do. The fish with the stronger immune system will be healthier for life and should live a long time, maybe longer than Betty White.
Just my opinion of course.