Why Pond Fish Hide at the Bottom and Three Go Missing

Scenario

A pond owner lost 3 of 10 goldfish over winter. The remaining 7 stay at the bottom, only eating food that sinks. Concerns: cat predation, cannibalism, or escape.

Likely Causes for Missing Fish

• Predators – Great blue herons and raccoons are the #1 pond‑fish predators. Cats rarely catch healthy fish.
• Winter mortality – Fish may have died and been scavenged.
• Jumping or entrapment – Possible but less common.

Why Survivors Hide

Fish hiding in warming water (above 50°F) often indicates a recent predator visit. They stay near the bottom for safety.

Action Plan

• Net the pond (year‑round) to exclude herons, raccoons, and other predators.
• Check pond depth and size; deeper areas provide refuge.
• Observe for signs of heron visits (droppings, disturbed edges).

Resources

• Mammal predators
• Bird predators
• Where did my fish go?