I have wondered for some time how much dissolved oxygen affect fish. I know low oxygen will hurt fishing (like during a turnover), and no oxygen means no fish (below thermocline or in areas of heavily dying vegetation). I wonder how much natural oxygen differences cause fish to move. I know people actively avoid areas they think may be low oxygen (bays that have turned over, hot shallow water) so I am surprised there isn't more for dissolved oxygen sensing equipment both for where you fish and your livewell. Is this something anyone has played with before? What are your thoughts and opinions on this?