Triploids behave the same as diploids. They act the same, look the same, they are the same, except they are genetically altered. In order to change them, they start as diploids.
The reason they clear out certain areas is because they don't 'mow' evenly. If undisturbed, grass carp will stay in one spot, munching, munching, until they form a hole. Then, something typically spooks them, they run off, set up the buffet table somewhere else, and munch on.
Not only do they need moving water for eggs to hatch, they need the 'perfect' food as babies, too.
