5 Fishes 4 Directions 
Aperiodic modified Ammann A1 tiles
Robert Ammann had taken up the idea of Raphael Robinson and imagined a different but still 6-tile tiling. I also simplified it by removing the squares in the corners.
But the high difficulty of this tiling to make familiar silhouettes made me take up the idea of fish and shells.
I have now reinterpreted the 7 sets of aperiodic tilings.
Ammann A1 has 6 tiles with 13 symmetrical deformations, 6 any deformations and 5 equally any deformations but different.
NICOLAS 2014
