yes, they try...but like I said, they aren't as successful. I am sure they wouldn't be able to uproot anything or move ornaments around like the larger crayfish. But they will cause damage to the plants leaves with their pinchers. That's all I am saying. Its a gamble really.
my favorite was when I had a pregnant dwarf female. Once inch in size. She lived in a tank with black diamond sand blasting sand. She would sit there and grab a few grains of sand at a time until she built a huge pile of sand in front of her cave.
But again....you are not getting a cambarellus diminutus if it is 3 inches.
I know...it is not 3 inches sorry...
fishbruh u can try shrimps that fun/