In rule B2-a/S12, the banana spark evolves into a period-6c/6diagonalspaceship, which completes the proof that the smallest minimum population of a spaceship in an isotropic 2D rule is 3 cells (all two-cell patterns have rotational symmetry of some form and therefore can't be spaceships). Similarly, in a whole bunch of rules containing B2-a/S1, it is a c/4diagonal spaceship.