Hi,
In my opinion, I'd say no. For starters, these types are fish are usually very young when we buy them (like a 1 inch tang). Hence, these young fish tend to more fragile and more suceptible to shock than older ones. We all know that many more fish die before we even see them at the LFS. Why needlessly kill more fish just to keep a younger/smaller fish because our tank is too small to keep their older siblings?
Also, I think it is morally wrong. Its like buying a small puppy. After a year, you sell it because its too big and its not quite as adorable. Many people do it, but I just think it is wrong.
That's my take on the subject.
- Victor.
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