I bet those goldfish are healthier than most any in a fish store in the states. They certainly look bigger and more colourful than any goldfish I've seen in LFS.
If I'm not mistaken Asian dealers with tanks like the one posted have continuous water change systems, new water always coming in and old water always draining out. The fish may not have much room to move, but the water is near pristine. And again, it's just a holding tank until the fish is sold to it's final home.
If I'm not mistaken Asian dealers with tanks like the one posted have continuous water change systems, new water always coming in and old water always draining out. The fish may not have much room to move, but the water is near pristine. And again, it's just a holding tank until the fish is sold to it's final home.
