Thanks Klaus. I had a little doubt about the fish as well, especially the upper one is too clear.
The water obviously depends on the seed, and I sometimes have a little doubt about using the water shader for such tiny wavelets. The ridgy appearance is too ridgy IMO (and the ridges can't be smoothed like in a regular PF), and a perlin would be better. So I sometimes use a perlin, but not here. I may take a dive into the blues for some nice sinoid small waves....