Hyphessobrycon piorskii sp. n. ACICCAA 00695, holotype, 25.9 mm SL, Brazil: Maranhão State: Munim River basin BCICCAA 00881, paratype, 29.4 mm SL, Brazil: Maranhão State: Munim River basin (photographed by Felipe Ottoni).

 
 
  Part of: Guimarães EC, De Brito PS, Feitosa LM, Carvalho-Costa LF, Ottoni FP (2018) A new species of Hyphessobrycon Durbin from northeastern Brazil: evidence from morphological data and DNA barcoding (Characiformes, Characidae). ZooKeys 765: 79-101. https://doi.org/10.3897/zookeys.765.23157