Be careful what you wish for. Most animal rights organizations want to prevent the ownership of all animals. Allowing them to be seen as "experts" in this field is the beginning of the end for the hobby. If you are on this site because you enjoy keeping fish these groups are not going to agree with you on the moral line of what is acceptable. They might pull you in on an issue like bubble eye goldfish, but they will leave you by the wayside on their crusade against the hobby.
Fish in Tanks? No, Thanks! | PETA
Become a Spay/Neuter Volunteer and Help Animals | PETA check out the no birth nation movement
The Honey Industry | PETA they also don't like beekeeping, but that might be for another day
Look at what might happen in Winnipeg. No more MFK obviously, but even corydoras could be banned as venomous.
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There is a huge difference between animal rights and animal welfare. We all want healthy fish. The best way to encourage this is education. Many people wanted to ban painted/dyed fish. Eventually Glofish came out and was a humane way to appease the demographic that wanted garishly colored fish. That replaced the practice of dyeing fish. While many on this site may hate Glofish, it is helping grow the hobby, and now it is very hard to find those previously dyed "fruit tetras". Education and alternatives are always a better way to go than blunt regulation.
As for bubble eyes they have declined in popularity for years in the US. This is a combination of lack of demand and lack of supply. Many more people are finding these fish less "cute" and more "disturbing". On the supply side, as land values have increased in China many goldfish farms have disappeared. These more difficult breeds are the ones that seem to be disappearing. Consequently formerly cheap or common goldfish are now expensive. Look at what an oranda or ryukin costs today compared to 25 years ago.