hey everybody, i was wondering i just recently bought 6 Crystal Red Shrimps and i was wondering if you can tell the grade of the shrimp when they are still juvies? My shrimps are very small. Do you have to wait until they get a bit bigger for you to really know what grade they are? can someone please help me out and show me a link or a picture to how i can grade the crystals. like a grading chart of some sort? thanks in advanced!