What do you get if you cross a panda and a goldfish?
The Panda Oranda is simply another line bred member of the Goldfish family and if you breed one with another variety of goldfish you will get some that look like Panda Orandas, some that look like the other goldfish and some that carry the genes of one but look like the other and vice-versa. You would be reversing the years of work that expert fish breeders have done in developing the Panda Oranda in one fell swoop and at the same time you would be producing cross bred worthless fish.
Any kind of goldfish will mix OK with any other kind of goldfish. Goldfish are all one species with many 'sports' that have been developed by selective breeding. The only No! No! is if you have some well bred fish and don't want them to cross breed at breeding time. Then you will need to keep type with type, otherwise, since they are the same species, they will cross breed and your resultant fry will…
Goldfish were first developed by line and cross breeding methods from a wild species of carp prevalent in China over a thousand years ago. There are now farms where goldfish are bred for sale in many countries. The fish you buy in a pet shop could have been bred almost anywhere in the world. The main pet fish breeding and exporting countries are in tropical Asia.