Roeboides descalvadensis Fowler, 1932
publication ID |
https://doi.org/ 10.1590/1982-0224-20170094 |
DOI |
https://doi.org/10.5281/zenodo.3682108 |
persistent identifier |
https://treatment.plazi.org/id/03894103-3865-FFCA-FC28-FA4B2901050A |
treatment provided by |
Carolina |
scientific name |
Roeboides descalvadensis Fowler, 1932 |
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Roeboides descalvadensis Fowler, 1932 View in CoL
Fig. 9 View Fig
Body deep; greatest depth contained 2.2 to 2.7 and caudal peduncle depth 12.3 to 13.1 times in SL; head length 4.0 to 4.2, predorsal distance 1.9 to 2.0 and caudal peduncle length 12.8 to 13.5 in SL; snout length 3.6 to 4.4, horizontal orbital diameter 2.6 to 3.7 and least interorbital width 3.1 to 4.0 in HL. Mouth terminal; inner row of premaxilla with 6 teeth, outer with 4-6, inner row of dentary with 12-14, outer with 4-6 and maxilla with 9-11 teeth. Lateral line complete, with 66-71 pored scales; transverse series above lateral line with 13-16 scale rows and below with 8-10 scale rows. Dorsal fin with 10 or 11, pectoral fin with 11 or 12, pelvic fin with 9 or 10, anal fin with 50-55, and caudal fin with 19 rays. Ground color whitish; silvery longitudinal band on flank (brown or grey in preserved specimens), from humeral spot to caudal peduncle; black diffuse and oval, vertically elongated, humeral spot; one black spot on caudal peduncle, slightly forwarded prolonged. Yellowish fins ( Graça, Pavanelli, 2007).
Maximum standard length. 100.0 mm ( Graça, Pavanelli, 2007).
Distribution. Paraná-Paraguay system and Amazon basin.
Remarks. Roeboides descalvadensis was identified as R. paranensis by Graça, Pavanelli (2007). Lucena (2007) in a revisionary study of the Roeboides affinis (Günther, 1868) species-group, proposed the new synonym. Roeboides descalvadensis is a non-native species from the upper rio Paraná, and its occurrence can be associated with the filling of the Itaipu Reservoir and the consequent inundation of the Sete Quedas Falls ( Júlio Júnior et al., 2009).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Characinae |
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