Winterkill. We are at the northerly part of the range for Gizzard Shad. During a cold winter, they often die off in huge numbers. In a smaller body of water like these river backwaters, their decomposing carcasses will rob the water of dissolved oxygen, and even the hardier fish will die. Happens almost every year. And then high waters in Spring and Summer will re-connect these ponds to the main river, and fish will repopulate the backwaters again. Circle of life and all that... ;o)
Last edited by FishnDave; 03-03-2011 at 09:14 PM.
David Merical
St. Louis, MO
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