Blue dream / blue velvet
A variant of Blue velvet shrimp (Neocaridina davidi)

Representative Blue velvet shrimpphoto — a dedicated image of this exact morph isn't available yet.
A deep cobalt-blue line bred from the blue chocolate strain; 'Blue Dream' is the darkest, most opaque grade. Both are the same species as cherries, just a different selectively-fixed pigment line.
Keeper tips for this variant
Keep over dark substrate and feed a varied diet with occasional blanched spinach — pale lighting and bright sand wash out the blue and make culling for color harder.