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Depends...sometimes you can see the blue and sometimes not. It depends on their mood. You may be able to see a circular area where the eyespots are but they can blend in making it very difficult to see.
You might be able to see a circle, but your bimac is so small it will take some time for you see see the eye spots clearly. I remember insisting that I be shipped a bimaculoides, not bimaculatus, but when Ollie arrived, there was no way I could see the eye spots well enough to tell which species she was!