Quarantining a New Goldfish for a Pond

Adding a fish from a tank with dead/diseased fish risks introducing pathogens. Even healthy-looking carriers can trigger outbreaks.

Quarantine 3–4 weeks in a separate tank:

• Monitor daily for signs of illness.
• Consider microscopic parasite check by a pro.
• Treat if needed.

If the fish dies, identify the disease before restocking—some parasites survive weeks without a host. Disinfect the pond if necessary.

New fish hide for days after introduction. Be patient; avoid disturbing the water. They'll emerge when comfortable.