This is the third Blender 3D Work-in-progress for FISH.

Here, I have rendered the initial animation. Using only scanline render, the rendering was fast. To create Depth-of-field and underwater colourcast effect, I use composite nodes and Z value.

The water rippling reflect is an animated Voronoi texture.

The previous Works-in-progress are here:

1. WIP 1
2. WIP 2