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The '''turquoise cichlid''' ('''''Kronoheros umbriferus'''''), also known as the '''umbee cichlid''', is a [[species]] of [[cichlid]] fish found in freshwater habitats of eastern [[Panama]] and central and western [[Colombia]].<ref name=IUCN/><ref name=FishBase>{{FishbaseFishBase| genus=Kronoheros | species=umbriferus | month=June | year=2022 }}</ref> It is commonly caught as a food fish,<ref name=IUCN/> and sometimes kept in aquariums.<ref name=Rapps2000>{{cite web | last=Rapps | first=J. | date=10 June 2000 | title=Husbandry Of Caquetaia umbrifera, The Unsung King Of New World Cichlids | url=https://cichlidae.com/article.php?id=138 | website=The Cichlid Room Companion | access-date=19 June 2022 }}</ref> This robust fish is the largest cichlid native to its range, up to {{cvt|12|kg}} in weight and {{cvt|80|cm|ft}} long,<ref>{{cite web | title=Kronoheros umbriferus | url=http://www.fishing-worldrecords.com/scientificname/Kronoheros%20umbriferus/show | website=Fishing World Records | access-date=19 June 2022 }}</ref> and in the Americas only certain [[peacock bass]] and the [[wolf cichlid]] may reach a greater size.<ref name=Rapps2000/> Females of the turquoise cichlid remain significantly smaller than males.<ref name=Rapps2000/> It is strongly predatory, typically [[Piscivore|feeding on fish]] and other small animals, but it may also take fruits and seeds.<ref name=IUCN/>
==Taxonomy and appearance==
This cichlid was first [[scientifically described]] in 1913 based on specimens from the Cupe River, which is a part of the [[Tuira River]] basin in Panama. It was placed in ''[[Cichlasoma]]'', which at the time was a [[wastebasket genus]]. As the species clearly belonged elsewhere, it was subsequenctly moved to ''[[Heros (fish)|Heros]]'' or ''[[Caquetaia]]'', until finally moved to its own genus ''Kronoheros'' in 2016.<ref name=Rican2016>{{cite journal| lastlast1=Říčan | firstfirst1=O. | last2=Piálek | first2=L. | last3=Dragová | first3=K. | last4=Novák | first4=J. | year=2016 | title=Diversity and evolution of the Middle American cichlid fishes (Teleostei: Cichlidae) with revised classification | journal=Vertebrate Zoology | volume=6 | issue=1 | pages=11–102 | doi=10.3897/vz.66.e31534 | doi-102access=free }}</ref>
It is currently the only recognized species in the genus ''Kronoheros'', but it is likely it will be split into at least two separate species, as there are significant variations in the appearance and [[Genetics|genetic]] studies have shown clear differences between those from the Tuira River of Panama and the [[Atrato River]] of Colombia (genetic data is lacking for other populations).<ref name=Rican2016/><ref name=Perez2007>{{cite journal| lastlast1=Concheiro Pérez | firstfirst1=G.A. | last2=Říčan | first2=O. | last3=Ortí | first3=G. | last4=Bermingham | first4=E. | last5=Doadrio | first5=I. | last6=Zardoya | first6=R. | year=2007 | title=Phylogeny and biogeography of 91 species of heroine cichlids (Teleostei: Cichlidae) based on sequences of the cytochrome b gene | journal=Molecular Phylogenetics and Evolution | volume=43 | issue=1 | pages=91-11091–110 | doi=10.1016/j.ympev.2006.08.012 | pmid=17045493 | bibcode=2007MolPE..43...91C }}</ref>
Adults have aan iridescent light-spotted pattern, but the extent and color hue varies. It can roughly be divided into three main groups, each with some minor subgroups. Their differences are most obvious in adultsadult males and less so in adult females, whereas young are similar.<ref name=Pilack2020>{{cite web | last=Pilack | first=M. | year=2020 | title=Kronohero Report - in chronological order, science and hobby | work=Kronoheros-Report | url=https://www.academia.edu/43336533/Kronoheros_Report_English_Version | access-date=19 June 2022 }}</ref> The first group includes those from Panama and is sometimes known as the Panama green umbee. These have silvery spotting on the body and are quite yellowish overall, especially on the face and [[Operculum (fish)|operculum]], which lack silvery, turquoise or dark red spotting/speckling. The second group includes Colombian individuals from the [[Pacific/Chocó natural region|Chocó region]], the northwest (including Atrato River) and locally near [[San Rafael, Antioquia|San Rafael]] (awhere possibly [[Introduced species|introduced]]; this region is part of the [[Magdalena River|Magdalena]] basin that otherwise is inhabited by the third group), and is sometimes known as the black umbee or black gorillus. These are quite dark overall with a body covered in turquoise-blue spots, and dark reddish speckles on the head and operculum. The finalthird group is found widely in the Magdalena basin of Colombia and is the type best known in the aquarium trade. It is the "true" turquoise cichlid (although if split, the scientific name ''Kronoheros umbriferus'' belongs to the Panama population) and it is also known as the blue umbee. As suggest by the names, they are densely covered in turquoise-blue spots, including some on the face and operculum.<ref name=Pilack2020/>
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