I recently bought some ghost shrimp for the 5 gallon and noticed they dont really do much. I got them on Saturday and they seem to only swim around when it is dark. If I have the light on they just sit there motionless. If the light is off and the blinds are open on the patio door they are doing the same thing. But when the lights are off and blinds are closed I see them swimming up and down in circles. Not to mention I can hardly ever find them I have noticed shells in there so I take it they are molting. I have 6 in there. There are no other critters in there. Just them and some java moss and java fern. O and all those yucky snails. Do they do anything or just sit there all the time? Can I get some more or should I leave it at the 6 that are in there?