It looks like a piece of crap to me...A well executed piece of crap though! I like it! ^_^

I though it's a robot fish, but from the other side it looks like a bull.

Nice work.

 I think it's perfectly fine.  Exceptional job on the shading.

It's a bit hard to understand it, but the ideia seems to be good.

I think adding more contrast and definite lines would be fine.