My red claw crab hasn't move in 3 days, I know is not dead because the limbs are flexible, dosn't smell at all, and the move a littje bit once in a while; It's in a fresh water tank w/ good water quality; I took it out for a couple hours, but it didn't respond...It's a 14 g tank w/ 3 neons, 1 gourami, 1 cory, 3 platties & 2 snails,any suggestions?