Being a fish breeder many people ask where I buy my fish from. I always say “from everywhere” since… Well I buy from everywhere. Most of the time I will go on eBay and see what I can get. But I also have bought from different sites like Get Gills, and Michael’s Fishroom. Now you might still be asking: “But what is the BEST place to buy from?”.
To answer that question I must first ask about what you are looking for. Are you looking for a trusted seller? Then I would go for places that are owned by youtubers or even a fish store near you. Are you trying to get cool fish? To get cool looking fish you will most likely be buying from a much smaller fish breeder. They might go out of stock very fast as well. Also never forget that buying from multiple is usually a good bet since you know that mixing them together will result in a stronger fish.
What I am trying to say is that you should buy from multiple places and find out as you go what you want. I switch it up and just buy from a bunch of different people.
But keep in mind that sometimes mixing different waters will result in making a bacteria that can kill all of your fish. Sometimes you might look at your new fish and see that they look just fine. Then you add your other fish to the tank and notice that they can’t swim or one of their eyes is missing. So keep that in mind when mixing different kinds of water and that some fish will become immune to it so you will not be able to tell if it is safe just by looking.
So again I think you should try all kinds of places because after 2 years of buying fish I still think variety is best when buying fish. Remember to stay safe and alive! This is just another random thing that life will throw at you.