new species:
Crenicichla taikyra Casciotta, Almirón, Aichino, Gómez, Piálek & Rícan, 2013

published in:
Casciotta, J., A. Almirón, D. Aichino, S. Gómez, L. Piálek & O. Rícan (2013):
Crenicichla taikyra (Teleostei: Cichlidae), a new species of pike cichlid from the middle río Paraná, Argentina.
Zootaxa 3721 (4): 379-386

abstract (from publication):
Crenicichla taikyra, new species, is described from the middle río Paraná, Argentina. Crenicichla taikyra is distinguished from the other species of the genus by the following combination of characters: lower pharyngeal tooth plate stout, bearing molariform teeth, ascending arm of premaxilla longer than the dentigerous arm, posterior edge of preoperculum serrated, a well developed suborbital stripe, and absence of scattered dark dots on flanks. Molariform teeth on pharyngeal jaws is a derived character among Crenicichla species, however this character state has appeared several times in unrelated species.

distribution (from publication):
Crenicichla taikyra was found in the middle río Paraná in Misiones and Corrientes Provinces, Argentina.

habitat (from publication):
Below the Yacyretá Dam the specimens were collected in stony environment. Secchi disk 212 mm, water temperature 25.1ºC, pH 7.14, conductivity 51.4 μS cm-1, dissolved oxygen 8.2 mg l-1(99.7% saturation), alkalinity 9.0 mg l-1.