Copionodon lianae is a species of freshwater ray-finned fish belonging to the family Trichomycteridae and the subfamily Copionodontinae, the Chapada pencil catfishes.Campanario, C.M. and M.C.C. de Pinna, 2000. A new species of the primitive trichomycterid subfamily Copionodontinae from northeastern Brazil (Teleostei: Trichomycteridae). Ichthyol. Explor. Freshwat. 11(4):369-375. It is found in the Grisante River, a tributary of the Mucujê River, which is a tributary of the Paraguaçu River in Bahia, Brazil. This species reaches a length of .
Etymology The catfish is named in honor of ichthyologist Liana Figueiredo Mendes, of the Universidade Federal do Rio Grande do Norte in Brazil, who collected the type specimens.
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