Parotocinclus

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Parotocinclus
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Siluriformes Family: Loricariidae Subfamily: Hypoptopomatinae Tribe: Otothyrini Genus: Parotocinclus Eigenmann & Eigenmann, 1889
Type species
Otocinclus maculicauda Steindachner, 1877
Species
P. amazonensis P. aripuanensis P. bahiensis P. bidentatus P. britskii P. cearensis P. cesarpintoi P. collinsae P. cristatus P. doceanus P. eppleyi P. haroldoi P. jimi P. jumbo P. longirostris P. maculicauda P. minutus P. muriaensis P. planicauda P. polyochrus P. prata P. spilosoma P. spilurus

Parotocinclus is a genus of catfishes (order Siluriformes) of the family Loricariidae.

Contents 1 Taxonomy 2 Distribution 3 Description 4 References

[edit] 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 Hypoptopomatinae. Additionally, P. collinsae is not closely related to P. maculicauda, and may be more closely related to Hypoptopoma and four other genera. P. jumbo and P. collinsae may eventually be transferred to new genera.^[1] 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 subfamily Hypoptopomatinae.^[1]

[edit] Distribution

Parotocinclus species are distributed in the Atlantic coastal drainages of Guyana and Surinam, eastern and southeastern Brazil.^[2] Seven species of Parotocinclus are known from Brazilian rivers south of the São Francisco River basin: P. maculicauda (southeastern coastal rivers from Espírito Santo to Santa Catarina States); P. bahiensis (Senhor do Bonfim, Bahia State); P. doceanus (Doce River, Espírito Santo State); P. minutus (Canudos, Bahia State); P. cristatus (Ilhéus, Bahia State); P. jimi (Itagibá, Bahia State); and P. planicauda (Suaçui Pequeno River, a tributary of the Doce River, flowing near the city of Coroaci, Minas Gerais State).^[3]

[edit] Description

Most species of Parotocinclus have the caudal peduncle oval in cross section; however, in P. planicauda and P. cristatus, it is quadrangular.^[3]

[edit] References

1. ^ ^{a b} Gauger, Marco F. W.; Buckup, Paulo Andreas (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)" (PDF). Neotropical Ichthyology 3 (4): 509–518. doi:10.1590/S1679-62252005000400008. 
2. ^ Schaefer, Scott A. (1988). "A New Species of the Loricariid Genus Parotocinclus from Southern Venezuela (Pisces: Siluroidei)" (1): 182–188. 
3. ^ ^{a b} Garavello, J. C.; Britski, H. A. (2003). "Parotocinclus planicauda, a New Species of the Subfamily Hypoptopomatinae from Southeastern Brazil (Ostariophysi: Loricariidae)" (PDF). Braz. J. Biol. 63 (2): 253–260. doi:10.1590/S1519-69842003000200010.