Nice character design! Very reminiscent of Fez.
He doesn't feel too much like a monkey to me, atm. Something that may possibly help is adding a "skin" section around the face to separate it from his blue fur. You could utilize the same colors you're using for the stomach to do so. Speaking of which, those green shades don't contrast well enough with the blue, and aren't noticeable at a smaller size.
Made a brief edit to show you what I meant. I think the pattern around the face gives him more of a monkey look.
You have (what I feel is) a couple of unnecessary colors in your palette, too. While I understand what sort of depth you were going for with the varying shades, there's a couple ways around it. Note that I removed the intermediary blue tone you were using for the tail, and went with the darker shade instead. This allows you to remove the white you were using for the right arm, and use the blue from his body instead. I feel this makes the anatomy a bit more readable, which is always a hard thing to pull off when pixeling such a small piece.