GBR and mystery snails

[xsryman]

I have a tank with two GBR's and two mystety snails. For some reason they keep picking on one of my snails. He has been hunkered in his shell but every time he comes out the gbr keeps nipping at him. Why? Why dont they bother the other snail?

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[xwing]

Oh they will soon as they kill the one they are currently going after I made that mistake in my peacock tank they didn't stop until they killed it