koi fish 3d model

針對身體圖案和框線細化（主要重繪）： "A highly simplified cloisonné pattern on the fish body, replacing the previous dense small segments with fewer, larger, irregular color-filled enamel fields (gold, brown, red, green, beige) that align with early simple block-pattern concepts. The black separating lines between all segments, including simplified body and fin outlines, are extremely thin, fine, and delicate, drastically thinned from image_4.png. The overall body form is adjusted to be less curled and more upright, in a straightened, graceful 'S'-curve leaping pose. Retain the detailed head and fin shapes, but thin the metal outlines everywhere." 針對姿態直化和動力學優化（次要重繪或姿態引導）： "The koi fish is in a dramatically different pose compared to image_4.png: it is much more straightened and upright, captured in a graceful, extended 'S'-curve leaping pose, with its head directed straight up as if breaking the water surface. Its body form is simplified with fewer, larger patchwork enamel blocks. Retain the detailed head and fin shapes, thin