A minimalist line drawing of a koi fish swimming with flowing water.

A delicate, minimalist line drawing of a koi fish swimming upward. The fish features fine, flowing lines that outline its body, fins, and tail, with subtle details indicating scales and facial features. The koi's body curves gracefully, creating a sense of movement, and there are gentle, curved lines beneath it representing water ripples. The tattoo is placed on the upper arm, blending simplicity with elegance.