A few years ago a Gao Qiqiang TV series took the country by storm with the classic line, I want to eat fish. The mention of fish, I remembered that there is a .fish domain name has not been hot, recently because some people eat fish in the restaurant, see the .fish domain name to mention this. Let's nag.
Having been in the domain name industry for many years, I've seen all sorts of strange domain extensions, and ten years ago, the new top-level domains introduced some strange domain names, one of which was .fish.

It's good to eat fish regularly as part of a balanced diet, and there's a website abroad that specialises in selling fish with the domain name Better.fish, and clicking on that domain name will take you to thebetterfish.com.
The .fish domain name is an emerging top-level domain (TLD) which is dedicated to fish-related websites and content. This type of domain name is designed to provide a unique online identity for fish farming, marine conservation, fisheries, aquarium hobbyists, and other fish-related industries. It not only provides relevant businesses and organisations with an easily recognisable and memorable website address, but also enhances their online brand image.
Not many businesses use .fish domain names for their websites, unless they specialise in the fish industry, but at the same time there will still be .coms predominantly, so why would a business still register a .fish domain name? Because the domain name emphasises professionalism, enhances brand image, promotes marketing and creates a unique identity, among other things.