Baby Koi in 10,000 Gal Pond: Winter Survival

10,000-gal WA pond, 8 adult koi, 6 babies (1.5–2"). No pond plants. Babies eat algae, not pellets. Deepest 4 ft. Asks survival chances and care.

Good Odds If...

• Pond >3–6" deeper than max freeze depth (4 ft likely sufficient in Olympia).
• Ice hole maintained (deicer/aerator).
• Babies find natural food (algae, biofilm, microorganisms).

Action

1. Check local freeze depth table.
2. Ensure gas exchange hole all winter.
3. Try smaller pellets if you want to supplement.
4. Don't try to catch them—stress > benefit.

Natural selection will favor the hardy. 4 ft depth + hole = good survival.