Rineloricaria lanceolata was originally described from a single specimen of unknown sex, with a faded colour pattern. The present paper contains a redescription with figures of the species, based on the holotype from Peru, and on additional specimens from Ecuador, Bolivia, Guyana, and Brazil, including males with fully developed “bristles”, a secondary sexual character.

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Journal Beaufortia
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Released under the CC-BY 4.0 ("Attribution") License

Citation
Isbrücker, I.J.H. (1973). Redescription and figures of the South American Mailed Catfish Rineloricaria lanceolata (Günther, 1868) (Pisces, Siluriformes, Loricariidae). Beaufortia, 21(278), 75–89.