I liked the thought behind not infringing on the branding (fish facing left), the addition of the feet (showing real evolution), the dark solid background (and there was no light) and there is probably a hidden message in the font (maybe Times Roman).
But my research trail lead naturally to Wikipedia Ichthys and the Greek word -I CH TH U S.
Jesus, Christ, God, Son, Savior ΙΧΘΥΣ
Or even more intellectually pleasing the 4th century visual of the five letters superimposed into an eight-spoked wheel. But wait..... not to be undone - there is the Darwin Gunmetal 12 Spoked Wheel.
Now I could launch into the mathematics of two intersecting arc's with the cusp and the fact that the arcs imply two circles joining twice. But I will leave that to the quants out there. Maybe the proper Darwinian variation for this illustration is intersecting squares.
That would "box us" into the Creation argument. Hmmmmm - I'll leave that to a different blogger.