Color
Blue topaz
Reference information
| Name | Blue topaz |
|---|---|
| Genotype | A/- r/r d/d |
| Mandatory picture? | Yes |
| Frequency (all time) | 0.08 % (38 rats) |
| Frequency (in the last 2 years) | 0.11 % (2 rats) |
| Average lifespan (all causes) | 22.5 months (♀: 22.7 months – ♂: 21.9 months) |
Description
Agouti + RED + American blue.
Also known internationally as Opal Fawn.






















