Colour

Russian blue agouti

The Russian blue gene gives a darker blue in general than British blue, and it also has less of an effect on yellow pigment than British blue. This means that the Russian blue agouti is a darker rat overall than the British blue agouti, and it also has the characteristic heathering that all Russian rats exhibit.

While it’s a fairly common and easy to breed variety, I think the majority of people would agree that it’s not quite as pretty as a BBA. Like Russian blues, if you are not careful in selecting a blue colour you can easily end up with a rat that has a brown tone instead of the deep metallic blue that you’re looking for.

Genetics: Agouti with the Russian blue gene (aarbrb)

NFRS standard: A blend of dark blue ticking over a fawn ground. Heathering of the blue ticking is normal for this variety and is not a fault. Undercolour to be dark blue down to the skin. Foot colour to match top. Belly colour silver. A brown tinge to the ticking to be considered a fault. Eyes black.