This is an instructable on how I made it. :)
Step 1: Mold the Rice Krispie Treats
With a light coating of Crisco on my hands I molded the treats around dowels in the shapes of the 2 parts of the fish.
Step 2: Covering the pieces with fondant
Then I rolled out the fondant and covered the treat shapes with it.
I then used my fingers and some plastic clay tools to do all the detailing and sculpting.
Step 3: Making the fins
Step 4: Painting the fish
I painted the large fish parts and the fins separate and then attached the fins with a little bit of water and the help of some toothpicks.
I used Wilton gel colors mixed with vodka for the painting. I layered it up in several steps. First was a light greenish brown, then a couple light washes of a green with a little brown mixed in. Then I added the darker geen "spots" and finally a little light pink with a touch of gray in and around the mouth.