Descrizione originale come Cichlasoma pasionis:
ZooBank:EEB39AD5-019A-4D2D-9026-9332C3C226BF.
- Rivas, Luis Rene. 1962. "Cichlasoma pasionis, a new species of cichlid fish of the Thorichthys group, from the Rio de la Pasion, Guatemala". Quarterly Journal of the Florida Academy of Science. 25(2):147-156 (ffm00275)
Conservazione: Thorichthys pasionis è valutata dalle organizzazioni internazionali di salvaguardia delle specie a rischio come (LC) basso rischio (2018). Not listed in the Mexican Official Norm NOM-059-ECOL-2001 with any degree of protection. Although faced with pollution in part of its range, most of it remains relatively stable.