Pond Boss
Posted By: WhackerGuy Low DO Survivability Ranking? - 08/12/20 01:34 PM
Getting ready to dig next summer, still working on a stocking plan. I also ordered up Mike Otto's book this week. Is there a list on pond boss that ranks pond fish on their ability to survive low dissolved oxygen levels?

I'm trying to decide between WE or SMB (or both) as a predator for my perch pond hopes. Gonna run with no aeration for the first couple years while I get other projects done.

Location is far northern MN.
Posted By: ewest Re: Low DO Survivability Ranking? - 08/12/20 02:23 PM
It may take both to manage the tendency of YP to overpopulate. Lots of info here on the subject of YP , WE and SMB.
Posted By: Steve_ Re: Low DO Survivability Ranking? - 08/12/20 07:56 PM
Originally Posted by WhackerGuy
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.
Posted By: WhackerGuy Re: Low DO Survivability Ranking? - 08/13/20 04:40 AM
Originally Posted by ewest
It may take both to manage the tendency of YP to overpopulate. Lots of info here on the subject of YP , WE and SMB.
I'll probably end up putting in both to hedge my bet.
Posted By: 5444 Re: Low DO Survivability Ranking? - 08/22/20 04:49 PM
In my 1/2 acre pond the YP have been way more sensitive to poor water quality than the RES and PSS. I lost YP after every heavy rain and then I lost 28 4-5 weeks ago to low DO issues. I now have been aerating 24/7 and and have not lost any fish since I started aerating.
Posted By: Snipe Re: Low DO Survivability Ranking? - 08/22/20 10:04 PM
Low DO should really never be an issue-or allowed to be an issue-when choosing fish. The question should be what fish are adapted to your area. Warm water and cool water species overlap in larger impoundments commonly.
Cold water species are yet another choice.
I find in the research I've done that there is strong suggestion that YP are more tolerant of lower water quality than most other cool water species. What I can't find is where they fit in comparison to the fish in the warm water class that tolerate lower water quality conditions.
I know YP are less tolerant of higher temps yet do fine in my pond in 80 deg water. I have a few Saugeye mixed in but they handle some pretty nasty water for having both parents that require generally higher DO levels but then the Sauger can handle very high water temps, walleye can't.
I would think YOY and the oldest Bass, BG and other sunfish species would be the first to succumb to low DO before 2-5 yr old YP would have issues. I'm no rocket scientist here but with the info I could put together in my own research of species in my pond, and possible choices going forward, I don't think YP would have problem without other species suffering as well unless temps are very, very high.
Every pond is going to be different in what it will support-species wise.
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