[Green Bugs in aquarium]

Thank you all for your comments. Will they kill my shrimp? Should I try to get rid of them? My tank is about a month old. 

[Green Bugs in aquarium]

Hello,

i have a shrimp and snail only tank. There’s these green little bugs in the substrate. Does someone know what they are? And if they are dangerous to my shrimp and or snails? Thanks!