Descrizione originale come Crenicichla ypo:
ZooBank:1B4348BD-FEDA-41D6-BE51-9012DF81C2A1.
- Casciotta, Jorge & A. Almirón, L. Piálek, S. Gómez, O. Rícan. 2010. "Crenicichla ypo (Teleostei: Cichlidae), a new species from the middle Paraná basin in Misiones, Argentina". Neotropical Ichthyology. 8(3):.p.643-648. (crc02689) (riassunto)
Conservazione: Crenicichla ypo è valutata dalle organizzazioni internazionali di salvaguardia delle specie a rischio come (EN) Pericolo (2022). Crenicichla ypo is only known from Urugua-í stream basin, an affluent of the Paraná River in Misiones province. Some of the distribution is within protected areas, but part of the basin is altered by a dam and an artificial lake, with the presence of invasive exotic fish species, and forestation with exotic pines. There are five locations based on these threats, and an inferred continuing decline in habitat (Liotta, 2022).