Shrimp fighting???

[mgrassi]

Hello!

I had my (supposed) female amano shake my berried cherry shrimp today. I know that amanos can be quite aggressive when feeding time rolls around, but could this be an indication of my shrimp starving? I never see them eat the food I give them (though I'm sure they're sneaky at it). Is there any way to tell if a shrimp is starving/running out of food?

Thanks!