Cordylancistrus nephelion (Siluriformes, Loricariidae), a new and endangered species of suckermouth armored catfish from the Tuy River, north-central Venezuela. Francisco Provenzano Nadia Milani Zootaxa 2006 1116 29 41 DN3J urn:lsid:zoobank.org:act:E88A92A6-690A-42B9-B211-18E180A5B766 Actinopterygii Loricariidae Ancistrus Animalia Ancistrus gymnorhynchus Kner 1854:275 [25] Siluriformes 38 Chordata species gymnorhynchus  MBUCV V 19956, 5 ex., 17.83-82.72 mm SL.