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Crenicichla yjhui, a new species from the Paraná

Posted: Sat Sep 08, 2018 3:31 am
by cichla
A new pelagic predatory pike cichlid (Teleostei: Cichlidae: Crenicichla) from the C. mandelburgeri species complex
with parallel and reticulate evolution. by Pialek, Casciotta, Almiron & Rican. Hydrobiologia 2018.

Abstract

The Crenicichla mandelburgeri species complex from the Middle Paraná shows parallel evolution of ecomorphs to the unrelated C. missioneira species complex from the Uruguay River. In this article, we describe a new species from the C. mandelburgeri species complex that has evolved a parallel morphology and ecology to an unrelated species from the C. missioneira species complex (C. celidochilus). The new species is a pelagic predator that feeds predominantly on fishes and together with C. celidochilus is the only known pelagic species in the large riverine genus Crenicichla. The new species is endemic solely to a small tributary (the Urugua-í) of the Middle Paraná River where it is sympatric and partly syntopic with two other closely related endemic species that, however, differ strongly in their ecomorphologies (one is a generalistic invertivore and the other a specialized molluscivore). Mitochondrial DNA phylogeny finds the new species nested within the widespread C. mandelburgeri. Reduced genome-representation ddRAD analyses, however, demonstrate that this new species is of a hybrid origin and shares ancestry with C. ypo, one of the two studied sympatric species.

https://link.springer.com/article/10.10 ... 018-3754-1

Re: Crenicichla yjhui, a new species from the Paraná

Posted: Sun Sep 09, 2018 3:03 am
by Bas Pels
Cr chelidoculus was, when recentlydescriberd very popular indeed among aquarists. Perhaps it still is,

I wonder what will happen to Cr Yihui, which is most likely easier to keep in winter due to its more northern origen

Re: Crenicichla yjhui, a new species from the Paraná

Posted: Mon Sep 10, 2018 12:58 pm
by cichla
Note: there is no ZooBank registration. Hence, the new name is not available by this online article.