I've started with rice crispie treat on a wooden dowl stick.
As it sets,I added more rice crispies to places that needed more bulk.
Afterwards I covered it with fondant and added the lips and shaped the gills and eyes. I used a net to get the scale print on the skin.
I made the fins seperately, glued them and support it until dry.
I've started airbrushing with the lightest colours, working to the darker green and black.
Afterwards I've airbrushed it lightly with pearl.