One Fish Two Fish Birthday Cupcakes

My son's birthday is coming up, and we are doing a One Fish, Two Fish theme for him. He wanted to bring some cupcakes to school to share, so I copied a Pinterest idea and made these. He loved them and loved making them, as he (like most kids) is a big fan of sugar, butter, and goldfish crackers. The frosting is just buttercream and piped on with a ziplock bag with a hole cut in a corner, with sanding sugar, sugar pearls, and colored goldfish crackers for garnish. It was colored with Wilton sky blue paste color. The cupcakes themselves are just Funfetti mix cupcakes. In my non-expert opinion, cake mix is pretty darn tasty, but packaged frosting is pretty nasty.