(This is a non-profit fan art, all rights belong to original owner.)
I sculpted Nemo and Dory from both of the movies "Finding Nemo" and "Finding Dory" with ZBrush then I polypainted them and created the normal effect. Using keyshot I setted up the ilumination composition. Afterwards with Photoshop I created the final composition.
Made in Zbrush, Rendered in Keyshot, Post in Photoshop.