Ghost shrimp injuring fish?

[AJ_117]

Yesterday I noticed one of my pygmy corydoras in my 10g has an open gash on his side. When I first added the corys to the tank I saw some ghost shrimp annoy them but not really go after them. The only other inhabitant is a male Endler. I have since removed the largest ghost shrimp and put them in a separate tank. Would ghost shrimp do this to smaller fish? I'm pretty sure they are American glass shrimp and not something like a freshwater prawn.

 

[TheSmallFish]

I have ghost shrimp with really small platies and they have done nothing to them.