Cichla cataractae (Cichliformes: Cichlidae), new species of peacock bass from the Essequibo Basin, Guyana and Venezuela

@article{Sabaj2020CichlaC,
  title={Cichla cataractae (Cichliformes: Cichlidae), new species of peacock bass from the Essequibo Basin, Guyana and Venezuela},
  author={Mark Henry Sabaj and Hern{\'a}n L{\'o}pez-Fern{\'a}ndez and Stuart C. Willis and Devya D. Hemraj and Donald C. Taphorn and Kirk O. Winemiller},
  journal={Proceedings of the Academy of Natural Sciences of Philadelphia},
  year={2020},
  volume={167},
  pages={69 - 86}
}
ABSTRACT. A new species of peacock bass, Cichla cataractae, is distinguished from all congeners by molecular evidence and unique patterns of adult and juvenile pigmentation. Juveniles (<150 mm SL) have sides of body dominated by a series of three conspicuous dark blotches with the one below soft dorsal fin largest, attenuated posteriorly (long teardrop shape) but distinctly separated from elliptical caudal blotch; same blotches eventually with pale border (ocellated) in largest juveniles. Adult… 
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References

SHOWING 1-10 OF 40 REFERENCES
A review of the South American cichlid genus Cichla, with descriptions of nine new species (Teleostei: Cichlidae)
TLDR
The genus comprises 15 species recognized by external characters of which colour pattern and meristics are most significant, and in six species juveniles possess three dark blotches on the side and a dark band connecting the posterior blotch to the dark blotch at the caudal-fin base.
Ecology of Cichla (Cichlidae) in Two Blackwater Rivers of Southern Venezuela
TLDR
Examination of gonads and sizes of intraovarian oocytes indicated that reproduction by all five populations probably is initiated during the late low water period and may continue into the flooding period.
Simultaneous delimitation of species and quantification of interspecific hybridization in Amazonian peacock cichlids (genus cichla) using multi-locus data
TLDR
While several instances of introgressive hybridization were observed in anthropogenically altered habitats, most were found in undisturbed natural habitats, suggesting that introgression is a natural but ephemeral part of the evolution of many tropical species.
Feeding and reproductive ecology of Cichla piquiti Kullander & Ferreira, 2006 within its native range, Lajeado reservoir, rio Tocantins basin
TLDR
Results indicate that reproduction is occurring throughout the year and that this activity is not synchronized among individuals, which may subsidize management programs to conserve local stocks and provide theoretical insights to explain why C. piquiti is so harmful when introduced in non-Amazonian reservoirs.
Gape size influences seasonal patterns of piscivore diets in three Neotropical rivers
TLDR
It is shown how prey abundance and gape limitations interact to influence seasonal patterns of predator-prey interactions, and how prey sizes were more consistent throughout the seasonal cycle.
Temporal patterns of resource partitioning among Cichla species in a Venezuelan blackwater river.
TLDR
Together, the three Cichla species consume a wide spectrum of prey from a diverse fish assemblage, but prey are subdivided based on habitat, prey type, and season.
One species or four? Yes!...and, no. Or, arbitrary assignment of lineages to species obscures the diversification processes of Neotropical fishes
Species are fundamental units in many biological disciplines, but there is continuing disagreement as to what species are, how to define them, and even whether the concept is useful. While some of
The Casiquiare river acts as a corridor between the Amazonas and Orinoco river basins: biogeographic analysis of the genus Cichla
TLDR
The results support the idea that the Casiquiare connection is important across temporal scales, facilitating both gene flow and the dispersal and range expansion of species.
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