One of the best things about keeping Goldfish is the fact that there are so many diverse breeds out there – in fact, there are so many that it’s hard to keep track of them! There are round bodied ones, long bodied ones and even ones with little pom-poms for nostrils. However, not all goldfish breeds are compatible with each other – and sadly, casualties can be the unfortunate result when you get this part wrong.
The purpose of this discussion is to help you learn what types of goldfish are likely to do well in your tank. I hope that by the end of it you will be able to visit a pet store and easily spot goldfish breeds that would make suitable tank additions, and of course which ones you should walk away from (or set up another tank for!).
Please note that there will always be individual cases that fall outside the generalizations that I am going to make in the next few pages. For instance, I’ve experienced the occasional Oranda Goldfish that was terror when it came to other fish’s head caps – so much so that it had to isolated to its own tank. I’ve also personally kept a few Ryukins that went completely against the grain and remained very peaceful with all of their long-finned, slower moving tank mates.