Descrizione originale come Poeciliopsis hnilickai:
ZooBank:54572129-0D1A-4EC3-BB2E-7466732EB474.
- Meyer, Manfred & D. Vogel. 1981. "Ein neuer Poeciliopsis aus Chiapas, Mexico (Pisces: Poeciliidae)". Senckenbergiana biologica. 61(5-6):357-361 (ffm00029) (riassunto)
Conservazione: Poeciliopsis hnilickai è valutata dalle organizzazioni internazionali di salvaguardia delle specie a rischio come (LC) basso rischio (2018). Poeciliopsis hnilickaiis potentially threatened in the Mezcalapa River by anthropogenic activities including deforestation in upper portions of the basin and dam construction, however, this species appears locally abundant and there are no major threats confirmed to be impacting it directly (Matamoros, 2019).