I have a shrimp tank. The only time i get them to sit really still to use the magnifier on them is when they eating an algae wafer. And when they all eating on em they kick up a bunch of particles so this could simply be it landing on it. But i thought I'd ask. The shrimp all seem active and normal, no recent deaths. But this little one has some funky coloration going on and i know it don't always look like this. So you tell me, worry or it ain't nothing. Thanks