Goldfish and Frogs in Winter: Coexistence and Cold Climate Care

Paul asks about keeping goldfish and frogs together in an 8' x 2-3' x 4-6' deep pond (approx. 500 gallons) with winter lows of -16°C to -20°C. Robyn covers compatibility, depth requirements, and winter survival.

Key Points

• Compatibility: Goldfish and most pond frogs coexist; bullfrogs may eat small goldfish, while goldfish eat frog eggs and tadpoles.
• Breeding tip: Use a separate tub for frog breeding, move tadpoles to main pond in fall.
• Depth: At least 3 feet (4 feet preferred) for Zone 5/6 climates.
• Ice management: Maintain an opening for gas exchange with aeration or de-icers.
• Snow on ice: Brush snow off to allow light penetration for algae/plant oxygen production.
• Shade: Both fish and frogs prefer shaded areas for security; lilies and marginal plants help.

See winterizing guide for detailed methods.