Piranha by Olivier Viet

Diagrams in Le Pli 76
Folded from a square of patterned foil

Ray by Robert J. Lang

Diagrams in Origami Under the Sea by John Montroll and Robert J. Lang
Folded from a square of scrapbooking paper

Reef fish by Roman Diaz

Diagrams in AEP convention 2012
Diagrams in Argentina Convention 2010
Diagrams in BOS Convention 2010
Diagrams in Origami USA Convention 2010
Diagrams in Origami Worldwide by John Montroll and Brian K. Webb
Diagrams in OrigamIsrael 2018 5th Convention
Diagrams in OrigamIsrael Newsletter 25
Folded from a square of duo origami paper

Reef triggerfish by Michael G. LaFosse

Diagrams in LaFosse and Alexander's Essential Book of Origami by Michael G. LaFosse and Richard L. Alexander
Folded from a square of washi

Salmon by Roman Diaz

Diagrams in Origami Essence by Roman Diaz
Folded from a square of duo pearl origami paper

Seahorse by Katrin and Yuri Shumakov

Diagrams in Clownfish and Friends by Katrin and Yuri Shumakov
Diagrams in Origami Sailing by Katrin and Yuri Shumakov
Folded from a square of duo origami paper

Seahorse for Al Miyatake by Michael G. LaFosse

Diagrams in LaFosse and Alexander's Essential Book of Origami by Michael G. LaFosse and Richard L. Alexander
Diagrams in Ultimate Origami for Beginners by Michael G. LaFosse and Richard L. Alexander
Folded from a square of textured origami paper

Striped fish by Suzuki Mari

Diagrams in NOA Magazine 252
Folded from a square of duo origami paper

Swordfish by John Montroll

Diagrams in Origami Under the Sea by John Montroll and Robert J. Lang
Folded from a square of origami paper

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