Advanced Nanacy are considered advanced because they have more tiger patterning and cheek spots. These do throw metallic and can be selectively bred to be more prevalent. These are also called "Taiwan Tiger Pintos", "Galaxy Tigers", or "Nanashi".
We send small, unsexed juvies.
These do require very specific water parameters to thrive. We use 100% RO water, mineralized with gh+ to a gh of 4-6. No kh, and ph should be between 5.8-6.5. I suggest using a high-quality shrimp soil such as Ada Amazonia or Landen.