Genus of fish
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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. It is a medium-sized cichlid, up to in standard length.
Taxonomy.
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, 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". As a consequence, Catalog of Fishes now recognizes "Theraps" as only including the type species, and as of 2023[ [update]] FishBase agrees.
References.
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