Tattoo Design: Koi fish

I really love this piece, I think its more of the character I've created, not sure why but I can imagine this fish to be a real joyful little chap. I would quite like this as a tattoo design for myself but I don't think I would be able to pull it off, its quite a delicate design but Its still slightly too bold for me. I would like to do a coloured version next but not too sure of the shades I would choose.