Tropical fish by Seo Won Seon (Redpaper)

Diagrams in Creative Origami by Seo Won Seon and Lee In Kyung (Red and White Paper)
Folded from a square of origami paper

Yellow tang for Mariko by Michael G. LaFosse

Diagrams in Creased Magazine 6
Diagrams in LaFosse and Alexander's Essential Book of Origami by Michael G. LaFosse and Richard L. Alexander
Folded from a square of Indian Gold paper