New Heptapterus from Argentina
Posted: 16 Aug 2011, 12:45
Azpelicueta, M.d.l.M., Aguilera, G. & Mirande, J.M. (2011). Heptapterus mbya (Siluriformes: Heptapteridae), a new species of catfish from the Paraná river basin, in Argentina. Revue Suisse de Zoologie, 118(2): 319-327.
Abstract:
Heptapterus mbya (Siluriformes: Heptapteridae), a new species of catfish from the Paraná river basin, in Argentina. - We describe a new species of heptapterid catfish of the genus Heptapterus from the streams Cuña-Pirú, Azul, and Moreno, in the province of Misiones, Argentina. Heptapterus mbya sp. n. is distinguished from all other congeners by dark plumbeous body and a low number of anal-fin rays that are branched (11-12) out of a total number of 15-17 anal fin rays, a large eye (13.8-17.9 % of HL), prepectoral distance 31.9-37.8 % of SL, distance between the last dorsal-fin ray and the adipose-fin origin 5.24-8.33 % of SL, adipose-fin base 47.4-58.5 % of SL, 13 principal caudal-fin rays, and 10-13 gill rakers on the first arch.
Abstract:
Heptapterus mbya (Siluriformes: Heptapteridae), a new species of catfish from the Paraná river basin, in Argentina. - We describe a new species of heptapterid catfish of the genus Heptapterus from the streams Cuña-Pirú, Azul, and Moreno, in the province of Misiones, Argentina. Heptapterus mbya sp. n. is distinguished from all other congeners by dark plumbeous body and a low number of anal-fin rays that are branched (11-12) out of a total number of 15-17 anal fin rays, a large eye (13.8-17.9 % of HL), prepectoral distance 31.9-37.8 % of SL, distance between the last dorsal-fin ray and the adipose-fin origin 5.24-8.33 % of SL, adipose-fin base 47.4-58.5 % of SL, 13 principal caudal-fin rays, and 10-13 gill rakers on the first arch.