Famiglia
Cichlidae
Sottofamiglia
Cichlinae
Tribu
Geophagini
Genere
Crenicichla
Gruppo
Lacustria (subgenus)
Ultimo aggiornamento in data:
24-nov-2023
Crenicichla iguassuensis Haseman, 1911
05-ott-2015 — Two new species of Crenicichla described
A cura di Juan Miguel Artigas Azas
The Crenicichla species in the lower Iguazú River, part of the Paraná/La Plata drainage in Argentina have been studied by Lubomír Piálek and a group of scientists who publish their results in the Argentinian magazine Historia Natural. Five different Crenicichla species (four endemic) have been identified from this area, two of which are described as new; namely Crenicichla tuca and C. tapii. The better known of the new species is perhaps the very attractive C. tuca, which was known as C. sp. ‘botox’ as popularized by Oliver Lucanus. The given specific name tuca derives from the Guaraní language word for toucan (Tucá), in reference to the large lips of this species, allegedly used to seal crevices and capture invertebrates hiding within. The second described species C. tapii, derives its name from the Guaraní word for tapir (Tapirus), which refers to its down-facing mouth and concave head associated with its grazing and semi-herbivorous mode of feeding. The other three syntopic (found living together in that area) species are C. iguassuensis, C. tessay (for which updated diagnosis are also offered) and C. lepidota. The latter species not endemic from the lower Iguazú River and found only distantly related to the other four. It is thus likely that the four endemic Crenicichla species have sympatrically (in the same distribution) evolved from a common ancestor to achieve feeding specialization.
Piálek, Lubomír & K. Dragová, J. Casciotta, A. Almirón, O. Rícan. 2015. "Description of two new species of Crenicichla (Teleostei: Cichlidae) from the lower Iguazú River with a taxonomic reappraisal of C. iguassuensis, C. tesay and C. yaha". Historia Natural. 5(2):5-27 (crc06900) (riassunto)
28-feb-2012 — Several species of Crenicichla depicted alive for the first timeA cura di Thomas Andersen
In an article in the recent issue of the German Amazonas magazine published by Natur und Tier-Verlag, Münster, Oliver Lucanus presents spectacular photos of live individuals of several southern species of the genus Crenicichla, which have never been photographed before, including C. yaha, C. hu, and C. iguassuensis, as well as the undescribed C. sp. "uruguay black line" and the stunning C. sp. "botox/iguassu big lips 2".
Lucanus, Oliver. 2012. "Neue Hechtbuntbarsche aus Argentinien". Amazonas. 40:52-57 (crc04211)