Species / Ball python / Butter
Butter
Butter line Lesser
incomplete dominantBEL complexhealth cautionpartly sourced
Where these notes come from: No Butter-specific description was read; the identification rows are carried over from the Lesser description, which lists Butter as another name for the same mutation.
Complex: BEL. Complex membership is as reported by breeders and community lists; most memberships have not been proven in a lab.
How to recognise it
| Head | Light brown crown, usually with a small blushed pale spot toward the neck. |
|---|---|
| Pattern | Normal-style alien heads but heavily blushed/washed; dark borders thin and often brown rather than jet black. |
| Colour | Bright yellow to orange side blotches with tan to mellow-orange blushing; individuals range from bright yellow/light brown to darker brown/cream. |
| Belly | Clean, crisp white with little or no marking. |
| Eyes | Not yet verified against a source. |
| With age | Not yet verified against a source. |
Rows marked "not yet verified" are withheld until they can be cited. Inheritance is the trade's usage unless a source below states it.
Visible in a single copy?
This IS the visible heterozygous form.
Super form (two copies)
Super Butter (BEL)
Not yet verified against a source.
Not yet verified against a source.
In combination with other genes

Seller's photo, used with permission. May be colour-enhanced. Morph as labelled by the seller; not DNA-tested.

Seller's photo, used with permission. May be colour-enhanced. Morph as labelled by the seller; not DNA-tested.

Seller's photo, used with permission. May be colour-enhanced. Morph as labelled by the seller; not DNA-tested.
These animals carry several genes at once. The caption lists everything the animal is said to be; none of them shows this gene on its own.
Health and welfare
A health concern is reported for this gene. The detail has not yet been checked against a source we can cite line by line, so it is not repeated here. Read the sources below before buying or breeding.
DNA test
A test is listed for Rare Genetics Inc: Lesser/Butter (list read 2026-11-13 on MorphMarket's page for that lab). All listed tests
Sources for this page
- Morphpedia: Lesser
https://www.morphmarket.com/morphpedia/ball-pythons/lesser/ - ProHerper: BEL complex overview
https://proherper-frontend-prod.vercel.app/knowledge/insights/bel-complex