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For many freshwater fish, the deadly pH limits are about what?

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  1. About 6.9 and 7.1
  2. About 1 and 14
  3. About 4 and 10

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References

  1. Merck Veterinary Manual: Environmental Diseases of Aquatic Animals in Aquatic Systems www.merckvetmanual.com/exotic-and-laboratory-animals/aquatic-systems/environmental-diseases-of-aquatic-animals-in-aquatic-systems Checked 2026-10-11.

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