Tattoo Design - Koi

I think I've made ~Eruki-chan wait for something from me for long enough. I've been fighting with the colours. Suggestions would be fantastic.

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This design was created with the impression that it would go on the shoulder or lower back. It's a koi fish that's acting as the the middle of the Ying Yang symbol that's there. The sun is on the bottom, with the moon up the top. I was thinking about putting the seasons as shown through water, rain, leaves and flowers.

I'll explain everything in more detail (the reason why it's the way it is and all) when I finally finish the colouring. Don't expect that to be anytime soon though. ==;

Sorry for taking so long, Elke!