Too Much Oil in the Food

Also try to have a very smooth water movement. They will end up cuddling together facing current in the most calm place in the tanks.

A water flow from left to right is a lot more indicated than back to front. You'll understand as they grow up.

I love Goldfishes, They are crazy pets.

Edit: Try to match the temperature of your pond in the garage before moving them.
Sounds reasonable
 

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