Selectively bred 'high red'
A variant of Brazilian Rainbow Boa (Epicrates cenchria)

Representative Brazilian Rainbow Boaphoto — a dedicated image of this exact morph isn't available yet.
Line-bred (polygenic) selection for the deepest, most saturated red base color rather than a single gene. The pinnacle of wild-type BRB beauty when paired with strong rainbow iridescence.
Keeper tips for this variant
High-red is polygenic, so color is verified only in mature animals — buy from breeders showing adult parents, and maintain UVB-free but proper full-spectrum lighting plus high humidity to keep the iridescent reds vivid.