Oligosarcus Explained

Oligosarcus is a genus of characins from freshwater habitats in northern Argentina, Paraguay, Uruguay, eastern Bolivia, and southern and central Brazil (South, Southeast and Central-West regions). They reach up to 31cm (12inches) in length and are predators that mainly feed on smaller fish.

Species

There are currently 22 recognized species in this genus:

• Oligosarcus acutirostris Menezes, 1987
• Oligosarcus amome Almirón, Casciotta, Piálek, Doubnerová & Říčan, 2015^[1]
• Oligosarcus argenteus Günther, 1864
• Oligosarcus bolivianus (Fowler, 1940)
• Oligosarcus brevioris Menezes, 1987
• Oligosarcus hepsetus (G. Cuvier, 1829)
• Oligosarcus itau Mirande, Aguilera & Azpelicueta, 2011
• Oligosarcus jacuiensis Menezes & A. C. Ribeiro, 2010
• Oligosarcus jenynsii (Günther, 1864)
• Oligosarcus longirostris Menezes & Géry, 1983
• Oligosarcus macrolepis (Steindachner, 1877)
• Oligosarcus menezesi Miquelarena & Protogino, 1996
• Oligosarcus oligolepis (Steindachner, 1867)
• Oligosarcus paranensis Menezes & Géry, 1983
• Oligosarcus perdido A. C. Ribeiro, Cavallaro & Froehlich, 2007
• Oligosarcus pintoi Amaral Campos, 1945
• Oligosarcus planaltinae Menezes & Géry, 1983
• Oligosarcus platensis (Messner, 1962)
• Oligosarcus robustus Menezes, 1969
• Oligosarcus schindleri Menezes & Géry, 1983
• Oligosarcus solitarius Menezes, 1987
• Oligosarcus varii Menezes & A. C. Ribeiro, 2015^[2]

Notes and References

1. Almirón, A., Casciotta, J., Piálek, L., Doubnerová, K. & Říčan, O. (2015): Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina. Zootaxa, 3915 (4): 581–590.
2. Menezes, N.A. & Ribeiro, A.C. (2015): A new species of the lowland Oligosarcus Günther species group (Teleostei: Ostariophysi: Characidae). Neotropical Ichthyology, 13 (3): 541-546.