Parotocinclus

Parotocinclus is a genus of fish in the family Loricariidae native to South America. This genus is distributed through almost all hydrographic systems in South America from the Guyana Shield drainages and Amazon Shield tributaries to the coastal drainages of eastern and southeastern Brazil, including the rio São Francisco basin.[1] Most species have the caudal peduncle oval in cross section.[2] It has been found that Characidium species may interact with P. maculicauda. The small Characidium will follow grazing P. maculicauda, which release particulate matter dislodged from the catfish's foraging.[3]

Parotocinclus
Parotocinclus jumbo
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Tribe: Otothyrini
Genus: Parotocinclus
C. H. Eigenmann & R. S. Eigenmann, 1889
Type species
Otocinclus maculicauda
Steindachner, 1877

Taxonomy

By an analysis published in 2005, Parotocinclus is not a monophyletic genus. P. jumbo is not closely related to P. maculicauda, but is positioned, instead, as a basal lineage of the subfamily Hypoptopomatinae. Additionally, P. collinsae is not closely related to Parotocinclus maculicauda and may be more closely related to the genus Hypoptopoma and four other genera. P. jumbo and P. collinsae may eventually be transferred to new genera.[4] P. bidentatus and P. muriaensis form a monophyletic pair of sister taxa that is more closely related to a subset of species of Parotocinclus (which includes P. maculicauda) than to any other genus of the tribe Otothyrini.[4]

Species

There are currently 38 recognized species in this genus:

References
  1. Roxo, F.F., Silva, G.S.C. & Oliveira, C. (2016): Description of a new species of Parotocinclus (Siluriformes, Hypoptopomatinae) from the rio Tapajós basin. ZooKeys, 634: 125–136.
  2. Garavello, J.C. & Britski, H.A. (2003): Parotocinclus planicauda, a new species of the subfamily Hypoptopomatinae from Southeastern Brazil (Ostariophysi: Loricariidae). Brazilian Journal of Biology, 63 (2): 253–260.
  3. Leitão, R.P., Caramaschi, É.P. & Zuanon, J. (2007): Following food clouds: feeding association between a minute loricariid and a characidiin species in an Atlantic Forest stream, Southeastern Brazil. Neotropical Ichthyology, 5 (3): 307-310.
  4. Gauger, M.F.W. & Buckup, P.A. (2005): Two new species of Hypoptopomatinae from the rio Paraíba do Sul basin, with comments on the monophyly of Parotocinclus and the Otothyrini (Siluriformes: Loricariidae). Neotropical Ichthyology, 3 (4): 509–518.
  5. Pereira, Edson H. L.; Santos, Alexandre Clistenes de A.; Pinna, Mário C. C. de; Reis, Roberto E. (2019-11-01). "An Enigmatic New Loricariid (Actinopterygii: Siluriformes) from Relictual Upper Reaches of Chapada Diamantina, Bahia, Brazil". Copeia. 107 (4): 597–605. doi:10.1643/CI-19-244. ISSN 0045-8511. S2CID 208942749.
  6. Ramos, T.P., Lima, S.M., & Ramos, R.T. (2017). A new species of armored catfish Parotocinclus (Siluriformes: Loricariidae) from the rio Parnaíba basin, northeastern, Brazil. Neotropical Ichthyology, 15.
  7. Lehmann A., P., Lazzarotto, H. & Reis, R.E. (2014): Parotocinclus halbothi, a new species of small armored catfish (Loricariidae: Hypoptopomatinae), from the Trombetas and Marowijne River basins, in Brazil and Suriname. Neotropical Ichthyology, 12 (1): 27–33.
  8. Lehmann A., Pablo & Lujan, Nathan & Reis, Roberto. (2022). A New Species of Armored Catfish (Loricariidae: Hypoptopomatinae) Syntopic and Superficially Similar to Parotocinclus collinsae, from the Potaro River Basin, Guyana. Ichthyology & Herpetology. 110. 10.1643/i2021065.
  9. Ramos, T.P., Lustosa-Costa, S.Y., Barros-Neto, L.F., & Barbosa, J.E. (2021). Parotocinclus jacksoni, a new hypoptopomatine catfish (Siluriformes: Loricariidae) from the Rio Mamanguape basin, northeastern Brazil. Journal of fish biology.
  10. Silva Jr., D. E. da, Ramos, T. P. A., & Zanata, A. M. (2020): A new species of Parotocinclus with reduced adipose fin (Loricariidae: Hypoptopomatinae), from the rio Jacuípe basin, Bahia State, Brazil Neotropical Ichthyology, 18 (2).
  11. Lehmann A., P., Koech Braun, B., Pereira, E.H.L. & Reis, R.E. (2013): A New Species of the Hypoptopomatinae Catfish Parotocinclus (Siluriformes: Loricariidae), from the Headwaters of the Rio Jequitinhonha, Brazil. Copeia, 2013 (3): 435-440.
  12. A, Pablo Lehmann; Camelier, Priscila; Zanata, Angela (2020-07-31). "Parotocinclus nandae, a new distinctive colored catfish (Loricariidae: Hypoptopomatinae) from the upper Rio Paraguaçu, Bahia State, northeastern Brazil". PLOS ONE. 15 (7): e0236690. Bibcode:2020PLoSO..1536690L. doi:10.1371/journal.pone.0236690. ISSN 1932-6203. PMC 7394401. PMID 32735598.
  13. Lehmann A., P. & Reis, R.E. (2012): A new species of Parotocinclus (Siluriformes: Loricariidae) from the upper Rio São Francisco, Brazil. Zootaxa, 3390: 56–64.
  14. Ramos, T.P.A., Barros-Neto, L.F., Britski, H.A. & Lima, S.M.Q. (2013): Parotocinclus seridoensis, a new hypoptopomatine catfish (Siluriformes: Loricariidae) from the upper rio Piranhas-Açu basin, northeastern Brazil. Neotropical Ichthyology, 11 (4): 787–796.
  15. Ramos, T.P.A., Lehmann A., P., Barros-Neto, L.F. & Lima, S.M.Q. (2016): Redescription of the endangered hypoptopomatine catfish Parotocinclus spilurus (Fowler, 1941) (Siluriformes: Loricariidae) from the upper rio Jaguaribe basin, northeastern Brazil. Neotropical Ichthyology, 14 (1): e150098.
  16. Lehmann A., P., Schvambach, L.J. & Reis, R.E. (2015): A new species of the armored catfish Parotocinclus (Loricariidae: Hypoptopomatinae), from the Amazon basin in Colombia. Neotropical Ichthyology, 13 (1): 47–52.
  17. Lehmann A, P., Lima, F., & Reis, R. E. (2018). Parotocinclus yaka, a new species of armored catfish (Loricariidae: Hypoptopomatinae), from the Amazon basin in Brazil. Zootaxa, 4521(4), 584–592. doi:10.11646/zootaxa.4521.4.7
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