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Description of a new species of Acestridium (Siluriformes: Loricariidae) from Colombia

Acestridium colombiensis is described from a single series of specimens from the Rio Inirida, Colombia. Acestridium colombiensis can be distinguished from its congeners by a unique combination of characters: two unpaired median pre-dorsal plates, body width 10.0 –13.0% of post-dorsal fin length, inter-orbital distance between 10.6 – 13.0% of post-dorsal fin length, inter-orbital distance between 25.0 – 29.0% of eye-to-dorsal fin length; low number of jaw teeth (12–15 teeth in upper left jaw, 9–13 teeth in lower left jar), pre-dorsal fin body pigmentation not formed into distinct lines between longitudinal rows of odontodes.