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| Soneira,Paula; Casciotta,Jorge; Almirón,Adriana; Ciotek,Liliana; Giorgis,Pablo. |
| Astyanax erythropterus (Holmberg, 1891) originally described on the basis of one juvenile, is redescribed herein based on juveniles and adults from the type-localiy. The species differs from its congeners by the combination of 11-13 transverse rows scales above lateral line and 8-10 rows below lateral line; 49-54 perforated scales in the lateral series; iii-v,38-42 anal-fin rays, and dorsal, anal and caudal fins vermilion red in juveniles. The vermilion red coloration of unpaired fins in juveniles of Astyanax is only known in A. correntinus. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical region; Color pattern; Juveniles. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400007 |
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| Casciotta,Jorge; Almirón,Adriana; Piálek,Lubomír; Gómez,Sergio; Rícan,Oldrich. |
| A new species of Crenicichla, C. ypo, is described from the Arroyo Urugua-í, a left-hand tributary of the middle Paraná River, Misiones province, Argentina. The new species is recognized by 6 to 8 irregular blotches along the upper lateral line, absence of scattered dark spots on flanks, low number (47-55) of E1 scales, and a slightly prognathous lower jaw. Females have a distinctive coloration of the dorsal fin, with a wide black longitudinal stripe on the distal portion with an equally wide red stripe below it. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water dweller; Urugua-í basin; Taxonomy. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300009 |
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