Wild-type
A variant of Common pleco (Hypostomus plecostomus)

Representative Common plecophoto — a dedicated image of this exact morph isn't available yet.
A large armored suckermouth catfish in mottled brown-and-tan vermiculation, with a tall sail-like dorsal fin and bony plated body.
Keeper tips for this variant
Sold tiny but reaching 40-60 cm — needs a very large tank, supplemental wood and vegetables, and produces heavy waste, so over-filter and rehome early if outgrown.