Study summary
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The results presented here are from an experiment that investigated changes in behavior over ontogeny and under varying food levels for individual specimen of Heterandria formosa, a small live bearing fish. The experimental fish were raised individually with food as the only manipulated environmental factor (low-food vs. high-food) and as a potential driver for the shaping of different behaviours. Behavioral differences among individuals were assessed across ontogeny with forced open field tests. Evaluating recorded tracks for movement and considering variables such as swimming speed and zonal positioning of the test fish gave valuable insights into behavioral changes over ontogeny.
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