An exquisite oil painting of a majestic koi fish swimming elegantly in an enchanting underwater oasis, surrounded by vibrant blooms and glistening water droplets. The intricate brushwork captures a captivating fantasy realm with hyper-realistic details, reminiscent of renowned artists Atey Ghailan, James Jean, and the artistic style of Ghibli anime films by Hayao Miyazaki. The golden scales, orange hues, and dynamic movements of the fish are accentuated by rich gold accents and a deep blue backdrop, creating a visually stunning and lively composition filled with vitality and surreal beauty.