From my experience they don't seem to quarantine their life stocks.
I usually had some with diseases and some very healthy one, it's a luck of draw when you buy from Nanyang Trading Aquarium.
On the side note it's cheap though.
If you don't want to risk introducing life stock with diseases, you can head down to Green Chapter or Aquatic Avenue, I believe their life stock are quarantined before selling.
However it's more costly, and I suggest you setup a 10 gallon quarantine tank before introducing into your main tank to avoid introducing pathogens and other harmful bacteria.
Oh and btw do you stay near north west area?![]()
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