Wintering Goldfish from 90-gal Pond in Massachusetts

90-gal coastal MA pond, 7 goldfish (3–4"), one turned orange. Cold winters. Asks tank size for indoor wintering; told 10-gal too small.

Indoor Tank Sizing

Minimum 20-gal, but 50+ gal Rubbermaid/Sterilite stock tank cheaper and better. Open top → net to prevent jumps.

Goldfish color change normal when young.

Pond and Water Gardening: Winter Pond Aeration: Why a PVC Pipe Won't Save Your Goldfish; Winter Pond Draining: Why Keeping Water In Protects Your Liner; Basement Rubbermaid Pond for Goldfish: Setup Essentials; 40 Fish Vanish Over Winter: Predator, Not Disease; Bringing Large Koi Indoors for Winter: Why It's a Bad Idea; Winterizing a Large Pond in Mild Mississippi Winters; Winterizing a Small Preformed Goldfish Pond in Missouri; Goldfish Dying Daily After Stocking 50 in 2000-Gal Pond: Overcrowding and Feeder Fish Risks; Goldfish and Frogs in Winter: Coexistence and Cold Climate Care; Removing Fish from a Pond for Winter Indoor Housing

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