Ball Python morph

Incomplete dominant

Russo

Ball Python (Python regius)

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What Russo looks like

Heterozygous Russo allele at BEL locus. Lighter with reduced pattern. Also known as Russo Het Leucistic.

Major multi-allele locus. Each heterozygous allele produces a distinct morph with its own visual phenotype. Any combination of two alleles from this complex produces a Blue Eyed Leucistic (BEL): a pure white or near-white animal with vivid blue eyes. Core proven alleles: Lesser (lighter color, reduced pattern), Butter (similar to Lesser, sometimes considered the same allele from a different line), Mojave (dark coloration with distinctive "flaming" pattern and patternless belly), Phantom (dark base, reduced pattern), Mystic (dark with subtle purple tones), Russo (lighter with reduced pattern), Special (lighter base), Bamboo (lighter with reduced pattern). The "Daddy" gene is a more recent addition with less extensive documentation.

How to identify it: Lesser: lighter overall, reduced dark pigment, clean belly. Butter: very similar to Lesser. Mojave: dark chocolate tones, distinctive flaming on sides, patternless white belly, dark crown on head. Phantom: dark base, subtle pattern reduction. BEL (super form of any combo): pure white, blue eyes.

How Russo is inherited

Russo follows a incomplete dominant inheritance pattern, carried on the Blue Eyed Leucistic Complex allele (locus BEL).

Combo morphs with Russo

  • GHI Mojave

    GHI + Mojave combination.

Predict Russo pairingsOpen the Ball Python genetics calculator.Identify a Ball Python morphUse the morph identifier to match photos to visually identifiable traits.

Track your Russo projects

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