My homebred Blue Velvet Neocaridina shrimp
 
Very nice blue velvets - some have bred with the black rose and created a blue/black that looks amazing
 
My neos live in water that is kept at these parameters:
 
TEMP - 80F
PH - 7.0
TDS/TOTAL DISSOLVED SOLIDS - 200-300 PPM
GH/GENERAL HARDNESS - APPROX 6dGH
KH/ALKALINITY - APPROX 10dKH