Theraps | |
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Cichliformes |
Family: | Cichlidae |
Genus: |
Theraps Günther, 1862 |
Species: | T. irregularis
|
Binomial name | |
Theraps irregularis
Günther, 1862
|
Theraps is a genus of cichlid fish that includes only a single species, the Arroya ciclid (Theraps irregularis) from fast-flowing rivers and streams in the Usumacinta and Polochic basins of southern Mexico and Guatemala. [1] [2] It is a medium-sized cichlid, up to 19 cm (7.5 in) in standard length. [3]
Historically, Theraps was included in Cichlasoma. Once recognized as its own genus, it sometimes included a wide range of species now known to belong in other genera, including Cincelichthys, Chortiheros, Chuco, Cryptoheros, Kihnichthys, Oscura, Paraneetroplus, Rheoheros, Talamancaheros, Tomocichla and Wajpamheros. In a major review of 2015, only five species remained in this genus, [4] but in 2016 it was shown that four of these were not close relatives of the Theraps type species, T. irregularis, resulting in them being moved to Chuco and Wajpamheros. [2] As a consequence, Catalog of Fishes now recognizes Theraps as only including the type species, [5] and as of 2023 [update] FishBase agrees. [3]
Theraps | |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Cichliformes |
Family: | Cichlidae |
Genus: |
Theraps Günther, 1862 |
Species: | T. irregularis
|
Binomial name | |
Theraps irregularis
Günther, 1862
|
Theraps is a genus of cichlid fish that includes only a single species, the Arroya ciclid (Theraps irregularis) from fast-flowing rivers and streams in the Usumacinta and Polochic basins of southern Mexico and Guatemala. [1] [2] It is a medium-sized cichlid, up to 19 cm (7.5 in) in standard length. [3]
Historically, Theraps was included in Cichlasoma. Once recognized as its own genus, it sometimes included a wide range of species now known to belong in other genera, including Cincelichthys, Chortiheros, Chuco, Cryptoheros, Kihnichthys, Oscura, Paraneetroplus, Rheoheros, Talamancaheros, Tomocichla and Wajpamheros. In a major review of 2015, only five species remained in this genus, [4] but in 2016 it was shown that four of these were not close relatives of the Theraps type species, T. irregularis, resulting in them being moved to Chuco and Wajpamheros. [2] As a consequence, Catalog of Fishes now recognizes Theraps as only including the type species, [5] and as of 2023 [update] FishBase agrees. [3]