Check out this lovely wall-mounted kinetic sculpture featuring koi fish with moving fins. The piece was created by Yasemin Sayibas Akyuz.
From the artist's web site:
I illustrated it on the computer and created a prototype first. And cut the main parts in CNC, then used my old friend the Dremel tool for detailed work, and painted it in acrylic. Automata featuring koi fish fish have a very long history in Chinese and Japanese culture.
Yaz explains that creating hand-crafted automata allows her to combine mechanical engineering, graphic design, painting, puppet making, and sculpting skills. Surely she has done just that with this wonderful piece.
You can see more work by Yasemin Sayibas Akyuz on her web site.