Agouti-based Colors

For more rat genetics, see the AFRMA Rat Genetics book, specific articles listed with the various standards descriptions, and the articles on the Info Pages: Breeding – Colors/Genetics – Rat Genetics, part 1, Rat Genetics, part 2, Rat Genetics, part 3. See also the Rat Biology article Where do Rat Coat Colors Come From?
See the AFRMA Rat Color Standards book and the Standards pages for photos.

Go to Fancy Rat Genes, Alphabetical Name Listing for a complete list.

Go to Fancy Rat Genes, Black-based Colors,
Fancy Rat Genes, Marked Rats, or
Fancy Rat Genes, Coats & Misc.

See also Fancy Rat Genes, Genetic Code Listing for breakdowns by genetic code.

A  B  C  F  H  L  M  O  R  S  T  W

Agouti-based Colors
A
Agouti	AA or Aa (i.e. A–)
Agouti: Apricot	A– gg pp* (P.E. Blue Agouti)
Agouti: Chocolate	A– bb (dark Cinnamon)
Agouti: Platinum	A– bb gg* or A- amam gg (U.K.)
Albino	cc (covers up the actual color/marking so can be either an agouti-based or black-based color; a.k.a. P.E. White)
Amber	A– pp (P.E. Agouti) or A– mm pp (P.E. Cinnamon) (a.k.a. a light Silver Fawn)
Apricot	A– bb pp Rr? or A– mm pp Rr?
Argente Creme	A– Cscs Fyfy** pp? or A– cchcch pp? (chinchillated Silver Fawn)
B
Blue Agouti	A– gg* (Opal)
Blue Agouti: pink-eyed	A– gg pp* (Apricot Agouti)
Burmese: Agouti	A– cech+ (similar to extreme dilute gene in mice)
Burmese: Russian Blue Agouti	A– cech+ dd (similar to extreme dilute gene in mice)
C
Chinchilla	A– Cscs Fyfy**? or A– cchcch? or ? (formerly called Silver Agouti; see Breeding the Chinchilla)
Cinnamon	A– mm (mink agouti)
Cinnamon: red	A– bb mm
Cinnamon: dark	A– bb (Chocolate Agouti)
Cinnamon: ruby-eyed	A– mm Rr
Cinnamon: silvered	A– mm
Cinnamon Pearl	A– mm Pepe
F
Fawn	A– rr or AA bb rr (ruby-eyed Agouti; Topaz U.K.)
H
Himalayan: B.E. Agouti Point	A– cici+ (similar to extreme dilute gene in mice)
Himalayan: Agouti Point	A– chc
L
Lilac Agouti	A– bb mm Rr
Lynx	A– Cscs Fyfy rr?, A– Cscs Fyfy mm rr?, A– Ccch?, A–mm rr?, A– rr?, A– rr cchcch or ? (came out of Chinchilla breedings)
M
Marten: Agouti	A– cmcm#
Merle: Cinnamon Pearl	A– mm Me– Pepe*
O
Opal	A– gg* (Blue Agouti)
R
Russian Blue Agouti	A– dd
Russian Cinnamon	A– dd mm
Russian Cinnamon Pearl	A– dd mm Pepe
Russian Fawn	A– dd rr
Russian Platinum Agouti	A– bb dd gg*
S
Siamese: B. E. Agouti Point	A– chci+ (similar to extreme dilute gene in mice)
Siamese: Agouti Point	A– chch
Silver Blue Agouti	A– dd gg* or A– dd gg mm?*
Silver Cinnamon	A– mm
Silver Fawn	A– pp (P.E. Agouti)
Silver Fawn: light	A– mm pp (P.E. Cinnamon)
Silver Fawn: P.E. Chocolate Agouti	A– bb pp
Squirrel (U.K.)	A– Cscs Fyfy** gg*? or A– gg cchcch? (chinchillated Blue Agouti)
T
Topaz (U.K.)	A– rr or AA bb rr (Fawn, U.S.)
Turpin (U.K.)	A– Cscs FyFy** Hro++H? or Cscs Fyfy** Hro++H? or A– cchcch HroHro++? (chinchillated Essex)
W
White: black-eyed	hehe or any h (marked selected for no spots; in either agouti-based or black-based color) Note: could also be slsl (Spotting Lethal); these suffer from aganglionic megacolon associated with white coat color, usually BEW but occasionally have small spot on head and hips and die usually within first week to 35 days after birth
White: pink-eyed	cc (albino; covers up the actual color/marking so can be either an agouti-based or black-based color) Note: extremely diluted P.E. Self colors or a P.E. Marked with all markings bred off can look like a P.E. White

Note: Many rat colors/varieties have not been studied by geneticists so codes are given by fancy rat genetics experts or are unknown

Note: Capital letter=dominant genes unless otherwise noted; lower case letter=recessive genes

“–” means that either the dominant or recessive allele could occupy that space without affecting the outcome

* = g or Me or Dal code by Nichole Royer

** = Cscs Fyfy code by Ann Storey, N.F.R.S.

+ = c^e or cⁱ code by Nichole Royer

++ = H^ro code by Sheila Sowter, N.F.R.S.

# = c^m or c^s code by Nicole Housel

? = genetics unknown

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