I don't think anchovies really exist.
Think about it. Have you ever had an anchovy? You know about them as pizza toppings that you pray are never on your pizza. They're a topping that only other people have on their pizzas - people with bad taste.
If you were with some people who were ordering a pizza they would ask you what you wanted on your pizza. You would likely say something like "Oh, just about anything is fine with me. Get whatever you want." If they said "Okay. How about anchovies?" You would make a disgusted face and say "Ewww! No. That's gross!" But you've never actually had anchovies.
If you ask your friends if they like anchovies, they'll make a face like they just bit into a lemon sprinkled with mace and say "No way!" But if you ask if they've had any, they'll say they haven't.
Once upon a time, I found the idea of raw fish was really repulsive. Now I love sushi. Once upon a time I found wine intolerable. Now, not so much. Tastes change. It occurred to me that I was judging anchovies without giving them a fair shot. So I started to try to order them with my pizza. But they never seemed to be on any menu! One time I did see it on a menu and I asked about it. They told me something like "Oh, we don't have those. If you want them you have to order a few days in advance." Who orders a pizza a few days in advance?
Then I forgot all about it. Until now. I found a recipe for Cesar Salad dressing. It calls for "1 can of minced anchovies (optional)". I decided to go for it. But, try as I might, I can not find any evidence at any grocery store that anchovies actually exist! So I make the dressing without anchovies. It's not too bad, but I'll never how bad it could be.