I will probably get flack for this, but i see nothing wrong with it. The fish were not put through a harmful ordeal to become colored like that. It was done genetically. As long as the fish are still healthy, thriving animals.
It probably doesn't bother me because i have studied genetics for years and been involved in many projects that deal with isolating genes, mutations and gene expression.
I don't think these fish would look good in a natural looking tank, but i would put them in their own uniquely decorated tank.
The downside is that i think these types of fish appeal mostly to those who want to keep fish because they "look cool" leading to more fish being kept in uncycled tanks that are too small for them. For that reason alone I think they are more of a negative than a positive.
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