Here's a revised prompt for the Koi fish image: "A charming Koi fish named Lucky, depicted as chubby and cute, with uniquely vibrant and intricate patterns on its scales. The fish is shown swimming gracefully in crystal-clear water, surrounded by gentle ripples and water lilies. The image is captured in sharp 4k resolution, highlighting Lucky's bright, shimmering colors and creative, distinctive markings that set it apart from other koi fish."