Vieja fenestrata Marble is a large, robust cichlid known for its striking marbled pattern. The body displays a mix of light and dark patches, creating a marble-like appearance that makes it highly sought after among hobbyists. Adult coloration includes shades of blue, gray, and brown, with males often exhibiting more intense patterns and subtle iridescent highlights.

Males are larger and more colorful than females, with elongated fins and pronounced body structure. Adult size typically ranges 25–30 cm, requiring a spacious tank to thrive.