Baryancistrus xanthellus is a species of armored catfish endemic to Brazil.

It is a benthic fresh water fish that lives in the Volta Grande and Xingu River, as well as the area immediately above Belo Monte falls and the Iriri River.

It reaches a length of 22.4 centimetres (8.8 in) SL.

[2] It appears in the aquarium trade, where it is typically referred to either by its associated L-numbers, which are L018, L081, L085, L177, LDA60, LDA116 or LDA117; or as the gold nugget pleco.

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