A ~ C ~ S~N~A~K~E~S

Snake Breeders Based in Leicestershire, England, UK      

BLACK RATSNAKE MORPH GUIDE

 

Wild Type 
Usually black but can include varying degrees of brown and/or grey colouration.  Ideally the black will obscure the saddles leaving a completely black snake however this is rarely the case.  Many specimens have underlying yellow to red colouration which can sometimes be seen between the black and other times is completely hidden.  Ventrals can be white to yellow to red and as they age, some animals develop black speckling particularly towards the tail and others have varying degrees of checkerboarding.  Many of the differences may well be locality related. 

 
Below we have only detailed those morphs we have recently been working with and included as much information as we can about the genetic
inheritance of each of them. Some of them may not be fully understood and we will therefore add further information as it becomes known.

Single Recessive

 

Albino
Red eyes and lacks black pigment, melanin. Also known as Red Albino, T- Albino or Amel.

 

Calico 
Eyes are yellow with a black pupil.  The head is white/grey, body is yellow which turns to orange towards the tail.  The body is covered in varying degrees of grey speckles as is the head. Wild types that are het for calico often display a greenish hue.

 

Hypomelanistic 
Reduced black pigment, melanin. Very deep ruby, almost black pupils.  It is unclear at this stage if this is compatible with the ruby eyed hypo. 

 

Ruby Eyed Hypomelanistic
Reduced black pigment, melanin. Bluey-purple iris with ruby red pupil.  It is unclear at this stage if this is compatible with the usual hypo and if it is not it may be considered a lavender morph.   

  Leucistic
Eyes are grey with black pupils. The body is completely white. In some cases odd scales are grey. Some specimens have a yellow tinge to the neck area whereas others have a yellow tinge to the entire body, we call these "Ivory" Leucistics (see below). There is believed to be a connection between the Rusty and Leucistic morphs where some breeders have reported rusty rats appearing in clutches from mating a pair of leucistics. Breeding of rusty to rusty is believed to produce some leucistics therefore some breeders speculate that Leucistic is the "Super" form of the rusty mutation.

 

Whitesided 
Eyes are grey with black pupils.  The main colour is grey/brown with the sides and ventral being ideally completely white.  Whitesided black ratsnakes vary greatly from a spattering of grey/brown/black scales making it all the way down to the ventral scales to what is known as "salt and pepper" where only a light spattering of the darker scales appear on the very top of the snakes body.  Other names include Liquorice stick, WS, shatter pattern WS.

Other single recessive mutations include: T+ Albino, Brindle, Lemon

Co-dominant/Dominant

 

Rusty
Co-dominant.  There is believed to be a connection between the Rusty and Leucistic morphs where some breeders have reported rusty rats appearing in clutches from mating a pair of leucistics. Breeding of rusty to rusty is believed to produce some leucistics therefore some breeders speculate that Leucistic is the "Super" form of the rusty mutation. Eye colour is usually rusty-orange with black pupil.  Ventral scales are ideally pinky-orange through the centre towards the tail.

Double Traits

Double black ratsnake mutations include: Albino Whitesided, Albino Leucistic, Albino Lemon, Brindle Whitesided, Brindle Albino, Cinnamon (rusty + brindle)

Selectively Bred

 

"Ivory" Leucistic
Leucistic is a recessive mutation (as detailed above).  "Ivory" is the name added to specimens with a yellow hue to distinguish them from pure white leucistics.  This has so far only appeared in some (not all) hatchlings in clutches where only one parent was "Ivory" and we have as yet not done a mating where both parents were "Ivory" but we would imagine all Leucistic offspring to be Ivory in this case but will confirm this as soon as we are able.

Unconfirmed Morphs

 

Albino Axanthic 
This specimen was acquired as albino axanthic but looks very similar to some of the hypo morphs above, more work will be done on this.

 

Albino/Albino Ivory Leucistic 
These were hatched from mating pairs of Leucistics.  They are also known as pink eyed Leucistics.  At this stage it is unclear if these are a two gene morph, making their parents Leucistic het for albino or just a pink eyed version of the leucistic.  This will be confirmed as soon as we are able. 

Snow 
Obviously this morph appears to be some form of albino but quite what else is in there is unclear at this stage.  If we can extract axanthic/anerythristic we believe she has the potential to produce some amazingly black animals.

Other morphs include: Albino cinnamon, Caramel Albino, Grape Albino, Lavender, Lavender Albino, Lemon, Ultra Black

If you have any questions or suggestions, please do not hesitate to email us.

Website and all images copyright A C Snakes | www.acsnakes.co.uk | Created and maintained by Adam & Charlotte Wilford