a long way i figered is to wait and see with ones dont get eggs. witch might take month though.....
maybe the males might have more color then females or males are biger then the females... or is it the other way around
thats the only ways i can really think of telling the diff.....
ill go surf the web to see if i find any thing later
after seaching i found very little and most of them just said that the males were larger. and i found a site selling shrimp cheap to eat...mmmmmm shrimp scampy.
well any way nothing about how to tell the diff. sept that females get full of eggs and males are bigger. not much else i can say sorry.