Is there a list on pond boss that ranks pond fish on their ability to survive low dissolved oxygen levels?
I've been wondering this myself, great question. In theory, the lower DO a fish needs would mean you could potentially have more of them in your pond, and less fish that are sensitive to DO changes. I'd probably say that catfish require the least DO out of the most commonly stocked species, just based on the fact that they can survive out of water for a very long time. I could be terribly wrong though.
