Which retailers quarantine fish?

[clowny]

Just to clarify I was talking about the holding tanks to ensure they are healthy and are showing no signs of disease.

[Myka]

Live Aquaria for the Diver's Den. They don't ship to Canada though, and yes they charge a premium for the fish on the Diver's Den.

There is a big difference between a proper quarantine and simply just holding the fish for observation for a week or two before offering up for sale. There are some LFS that hold the fish for a week or two.