These are some things that I thought about your image:
1) The model is 80% good. One problem in yours is the eye, the eye is very small and it almost gives it a human face look to it. The fish eye is larger so try to achieve something like this: http://www.plantedtank.net/forums/im...plendens.e.jpg
2) Using the same image notice that the fins and the tail are more softer, almost cloth like but that have some strong connections in between to keep them in place. Yours look a little bit too thick and not that soft, that is something that needs to be changed.
3) About the two comps you sent me. The one with the ocean above I personally don't like it, I think it is to much of the ocean for a single fish. The other image is too busy and then the fish is disappearing from the image. So you are going either too little or too much.
This is what I would recommend:
- Focus in some simpler environment where the fix is your point of interest. Something similar to this setting :
- Use nCloth to simulate the fins and the tail, we need it to feel like it is flowing in the water, don't make it too much like cloth but ncloth will give you a nice starting point to duplicate the reference
- your fish is too stiff, add a little turn to show that it is alive. Move the fins in different directions, multiple types of movements
- the shader on the fish still needs work, the scales on the fish need to show more like scales, right now it seems like painted plastic. Make sure you have more bumps (no zbrush geometry) but bumps.
I think you have a good start and a good image, now it is time to polish it a little bit more. Let me know how the image progresses.