I have never seen a live adult yet.... i dont think anyone has an adult either. But mine is growing fast, and im assuming it gets to be a big ray. Mine is also a verocious eater, eating anything dropped into the tank. She even out competes two motoros, one that is double her size. Not a begginers ray, based on cost, but deffinetly easy to care for..Extremly active as well.. Not saying all will be like that, but im definetly enjoying this ray and highly reccomend them...