Hello! I was thinking of getting a few ghost shrimp in my tank as I heard they make great cleaners. I was wondering if there is anything special I need to know about them. The tank is a 20g, and their mates would be neon tetras, harlequin rasboras, julii corys, and a mystery snail. I have quite a few plants in there for them to hide in if they need it. Any information on them would be appreciated!