25 The American paddlefish is found in deep rivers and lakes . They strain the water for the tiny plankton that they eat . Large paddlefish can reach over one hundred pounds and over twenty years . An adult female can produce 300,000 600,000 every two to three years . Nonetheless , the population of paddlefish has never been extremely and declined significantly over the last hundred years . Identify any two natural limiting factors that prevent the paddlelish population from increasing beyond a certain Give evidence on how each would limit the paddlefish population . ( factors , 2pts explanation )