The origami Goldfish is a simple extension of the samurai hat. It does involve a couple of cuts though, so have a pair of scissors in hand before proceeding with the origami :)
Similar to the kabuto, dual coloured paper would be the best for the goldfish. If made small enough, they make beautiful earrings too!
Model Details:
Model: Gold Fish
Origin: Traditional
Difficulty Level: Simple
Paper Ratio: Square
Paper Size: 3 inches
Model Size: ~2.5 inches