This was done as an exercise for University.
My educator allowed me to use blender even though the course is teached with maya. Which is pretty rad.
The fishes where sculpted and retopo’ed.
I used Substance Painter to apply the decals and bake a curvature and ambient-occlusion map. But the whole shading was done in Blender.
Decals were created in Illustrator.
Rendered with Cycles.
Look at it on Sketchfab