Just changed to a new trick of aquarium living trade is to use it after receiving fish.

Just changed to a new scam in aquarium living trade
That is, after receiving the fish, we use the anaesthetic to find the seller to report the loss of the fish.
When you get the money back, you should keep it and sell it.
It’s really fun.
So it’s widely advertised that you should pay attention to hey when you sell and change fish.
Primitive fish