Brush one side of a goldfish cracker with corn syrup, and coat with orange-coloured sugar. Pipe two thin lines of white glaze icing on goldfish and add a black gel icing dot for the eye. Pipe a thin border of chocolate icing around edge of cupcake. Dip edges into chocolate-cookie crumbs. Fill centre with blue sparkle gel icing. Stick green sprinkles around blue “pond.” Press the tail of goldfish into pond.