Megaleporinus piavussu
Description
Megaleporinus piavussu (Britski, Birindelli, Garavello, 2012)
Fig. 5
Body elongated; greatest depth contained 2.8 to 3.5, caudal peduncle depth 7.9 to 9.1 times in SL; head length 3.5 to 4.7, predorsal distance 2.0 to 2.2, caudal peduncle length 7.5 to 8.7 in SL; snout length 2.1 to 2.7, horizontal orbital diameter 3.7 to 5.1 and least interorbital width 1.9 to 2.4. Mouth subterminal; premaxilla and dentary with 3 teeth, no maxillary teeth. Lateral line with 41-44 pored scales; transverse series above lateral line with 6 or 7 scale rows and below with 5 or 6 scale rows. Dorsal fin with 11 or 12, pectoral fin with 15-19, pelvic fin with 9 and caudal fin with 19 rays (Britski et al., 2012). Ground color silvery; three dark-brown rounded blotches over lateral line. Dorsal fin whitish; pectoral, pelvic, anal and caudal fins yellowish.
Maximum standard length. 410.0 mm.
Distribution. Upper rio Paraná basin.
Remarks. Megaleporinus piavussu was identified as L. obtusidens by Graça, Pavanelli (2007). Ramirez et al. (2016) described the new genus, Megaleporinus, and proposed the new combination. Britski et al. (2012) redescribed M. obtusidens and described the new species, M. piavussu (under Leporinus) from the upper rio Paraná basin. Megaleporinus piavussu can be distinguished by having 39 or 40, rarely 41, pored scales in the lateral line, and mouth terminal, except in some large adults with somewhat subterminal mouth (vs. 41 to 43, rarely 44 in M. obtusidens, and mouth directed somewhat or entirely downward in M. obtusidens). The epithet piavussu is similar to the common name of M. macrocephalus “ piavuçu, piaussu ”, but these are different species and should not be confused.
Notes
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Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: 10.5281/zenodo.3678405 (DOI)
- Is part of
- Journal article: 10.1590/1982-0224-20170094 (DOI)
- Journal article: http://zenodo.org/record/3678395 (URL)
- Journal article: http://publication.plazi.org/id/FFB0397B3847FFE9FFB4FFDA2B5A0600 (URL)
Biodiversity
- Family
- Anostomidae
- Genus
- Megaleporinus
- Kingdom
- Animalia
- Order
- Characiformes
- Phylum
- Chordata
- Scientific name authorship
- Britski, Birindelli, Garavello
- Species
- piavussu
- Taxon rank
- species
- Taxonomic concept label
- Megaleporinus piavussu (Britski, 2012) sec. Ota, Deprá, Graça & Pavanelli, 2018
References
- Britski HA, Birindelli JLO, Garavello JC. A new species of Leporinus Agassiz, 1829 from the upper rio Parana basin (Characiformes, Anostomidae) with redescription of L. elongatus Valenciennes, 1850 and L. obtusidens (Valenciennes, 1837). Pap Avulsos Zool. 2012; 52 (37): 441 - 75.
- Pavanelli CS, Graca WJ, Zawadzki CH, Britski HA, Vidotti AP, Avelino GS, Verissimo S. Fishes from the Corumba Reservoir, Paranaiba River drainage, upper rio Parana basin, State of Goias, Brazil. Check List. 2007; 3 (1): 58 - 64.