CFC said:
Whats wrong with used fish? Many of my fish are ones that have been returned once they have started eating their tankmates or outgrown their original owners tanks. Without the option of being able to buy grown on fish i would have to have several grow out tanks or buy expensive adult wild caught fish.
I think that might be a little different, CFC.
I see that more as a hobbyist selling a fish to a dealer, less as a return. This is where buying from an independent store is a good thing because if a dealer knows the seller is serious about his fish, he will be more inclined to accept a fish he brings in for the reasons you mentioned and sell it to you, another customer who he knows is a serious fishkeeper. That fish will either be quarantined before being sold or you will be informed that it was not. A person who builds his store's reputation (not to mention his livelihood,) on quality would not risk doing otherwise.
What worries me more is the thought that some woman might get a fish home and decide that it doesn't match her color coordinated living room (or some such nonsense reason). Then, since its not going to be her concern, she stops at the mall on the way back to the lfs leaving the poor fish in the car. When this fish gets put back into the dealers tank it will probably still look healthy and neither the dealer nor the eventual buyer will know that it has caught a chill and is getting ready to come down with a case of ich.
Most hobbyists don't have the extra tank space to quarantine a new fish and by adding this fish they are likely to infect their entire tank.
THAT's why I question the wisdom of an lfs taking returned fish.
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MrV
re: dogs Yes, anyone who adopts a dog or cat from a pound or animal shelter takes it without knowing anything about it or its heritage. And, it's a good thing so many people do this or we would be overrun with homeless animals.