>>108779996Their vision is limited due to their anatomy, and the goldfish of that particular breed are poor swimmers because they lack their dorsal fin. Those fluid sacs can easily get ruptured and infected; just look at how fragile they look in motion:
https://www.youtube.com/watch?v=-3v1EEu75yMIt's possible to adjust to deformities, and these fish can probably live fine enough even if they've got some physical deficiencies. Also, I don't think fish have the capacity to wish for a different kind of life.
Still, IMO these kinds of extreme looks are not ethical breeding. It's on a similar level as toadline bulldogs, pugs that require nostril surgery for their breathing, or ball python morphs with wobble; placing aesthetics before the animal's health or quality of life.
