displacement map problem with dots.

[system]

Hello ,

i made 1 creature in maya and then i simplify uv's and giving detaling in zbrush.

then i create displacement map. but when m apply it on my model ( in maya ).

detalings looking good but there also some dots come on skin surface. even if i change bump value.

I attach my screen shot images with displacement map too.

If anyone suggest to me how to fix that problem. then i will lot of thankfull of him.

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