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fish near waterfall
Should I be concerned? I have a 2500 gallon pond with water lillies and
about a dozen koi (18") and a dozen goldfish. Lately I've noticed the koi are all hanging out under the waterfall. Nothing has changed - they never used to do this. They eat fine, and otherwise no issues. Is it posible they need more oxygen, or do they just like hanging out there? |
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