This is an original design that seems to match your description. I posted a variation of it as a t-shirt design, but it would look better as a tattoo. This would look great on your skin. I put my soul into this design. I hope it will find a place on your body:D
Here is a more tattooable version(I believe).
This is pretty much my regular style of drawing. I had the surfing genre in mind in designing this. Hope you like it:D
A variation of the koi design.
This is an original design that seems to match your description. I posted a variation of it as a t-shirt design, but it would look better as a tattoo. This would look great on your skin. I put my soul into this design. I hope it will find a place on your body:D