When a Koi Swallows a Goldfish: What to Do

Stay Calm

Koi rarely eat fish intentionally. They are omnivorous vacuums; a small goldfish can be inhaled during feeding.

If the Goldfish Is Stuck in the Mouth

The koi cannot eat. The goldfish will either be swallowed or expelled. Do not intervene unless the koi shows severe distress (gaping, rolling) for hours. Netting a large koi to check its mouth is highly stressful.

If the Goldfish Is Gone

The koi swallowed it. Digestion will occur. Koi can go weeks without food, so a brief fasting period is harmless.

Monitor

Watch for signs of blockage (bloating, inability to pass waste) for a few days. Otherwise, resume normal feeding.