As promised, heres the video. Now, as i said before, the last image was of a very early prototype, and one of the problems was that the fishes were dificult to see because of their transparency and they "blue color" that mixed with the bakground sea (thats why they are better seen against a "contrasting" objet, like the submarine in the image).
Though i never was able to solve the transparency, i removed most of the blue color of the fishes.
Heres a screenshot of the latest prototype, this time with common fish of the pacific (Herring):
And heres the video showing them in motion; take note that i activate time compresion in a section of the video to show the constant movement of them:
