i was going to say something similar. however i personally do not like the lookThis fish deserves and has a right to live just like any other living creature. If you had a child that had a birth defect would you want it culled? Props to the owner/care takers.
It's not about being culled for the defect for that single animal. You know a freak somewhere will call it a 'rare trait' and start breeding them that way for more money. Then you have a defective gene in a gene pool that is already too small.