Correct....^
Sticklebacks are just another food source for predatory fish. When you find a high concentration of sticklebacks in a lake, it is an indicator that the lake recently winterkilled or has a lack of predatory fish for some reason. They don't "take over". When the predatory fish die from winter kill, the sticklebacks thrive because they require very little oxygen. The reason you will never see bigger lakes like cold and slave lake over run with sticklebacks. Where as smaller slough like lakes susceptible to winter kill.
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