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Rediscovery of Rhyacoglanis pulcher (Boulenger, 1887) (Siluriformes: Pseudopimelodidae), a rare rheophilic bumblebee catfish from Ecuadorian Amazon

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  • Junior Chuctaya
  • Oscar Akio Shibatta
  • Andrea C Encalada
  • Karla S Barragán
  • Maria de Lourdes Torres
  • Estefanía Rojas
  • Valeria Ochoa-Herrera
  • Juliano Ferrer

Abstract

Rhyacoglanis pulcher is a rare Neotropical rheophilic bumblebee catfish known only from the type locality in the Cis-Andean Amazon region, Ecuador, and the type-species of the genus. So far, the three syntypes collected in 1880 were the only specimens unambiguously associated to the name R. pulcher available in scientific collections. Recently, a specimen was discovered in a fast-flowing stretch of the Villano river, a tributary of the Curaray river, Napo river basin, Ecuador, representing a new record after nearly 140 years. Here, we present this new record, identified by morphology, provide the DNA barcode sequence of the specimen, and propose why the species of Rhyacoglanis are scarce in zoological collections. Additionally, we discuss the intraspecific variation in the color pattern observed in R. pulcher.

Suggested Citation

  • Junior Chuctaya & Oscar Akio Shibatta & Andrea C Encalada & Karla S Barragán & Maria de Lourdes Torres & Estefanía Rojas & Valeria Ochoa-Herrera & Juliano Ferrer, 2023. "Rediscovery of Rhyacoglanis pulcher (Boulenger, 1887) (Siluriformes: Pseudopimelodidae), a rare rheophilic bumblebee catfish from Ecuadorian Amazon," PLOS ONE, Public Library of Science, vol. 18(7), pages 1-16, July.
    • Handle: RePEc:plo:pone00:0287120
    DOI: 10.1371/journal.pone.0287120
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