Which retailers quarantine fish?

[corpusse]

I would say none but there are a couple that maybe would do it, however I don't see how they could possibly make any money unless they charged 3x retail for the fish.

If you're talking proper qt it could be 2-3 months before they can add anything else depending on what the fish has, the cost of medication water food ect. Also the losses they'd incur vs the fish that sell the hour / day / week they arrive.