This Science News wallpaper contains
billfish and peixinho.
There might also be
spearfish, peixe-espada, marlin, marlim, sardinha pacífico, sardinops caerulea, sardinha pacífica, and sardinha do pacífico.
If you were looking at two shapes—specifically, a pointy, jagged polygon and an amoeboid-like splotch—which would you name "bouba," and which would you name "kiki"? Courtesy of SciFri.