I cannot make a fish to save my life. They don't look like fish once I start making them. Every fish on the CC website looks great. What is RTK? That is what a lot of people say they make their fish cakes out of.
RKT = rice krispy treats
RKT is rice crispy treats. If you're interested in small decorative fish, look in the cake decorating forum and look for a post by Sugarshack titled Beachball... it's on the first or second page. She directs you to her blog with the instructions on how she made everything on her FABULOUS beachball cake. Check it out it's awesome.