最初命名為 Crenicichla jegui:
ZooBank:87E92B4E-331B-48EB-8AC0-B27C2FE23841.
- Ploeg, Alex. 1986. "The cichlid genus Crenicichla from the Tocantins River, state of Para, Brazil, with descriptions of four new species (Pisces, Perciformes, Cichlidae)". Beaufortia. 36:5:57-80 (crc00072) (摘要)
保育: Crenicichla jegui 被評鑑為國際自然保育聯盟瀕危物種紅皮書名單中的 (EN) 瀕危 (2018). The biggest threat to Crenicichla jegui is the suppression of the habitat caused by the construction of hydroelectric plants. Crenicichla jegui is known from three locations: Baixo Tocantins Region (where it was built The Tucuruí hydroelectric plant), Baixo Araguaia, in Santa Isabel (where the Santa Isabel hydroelectric plant will be built), and Pedral de Itaipavas, in Conceição do Araguaia. After the construction of the Tucuruí hydroelectric plant, the species was no longer registered in the reservoir area (ICMBio, 2022).