Video: https://www.amazonasmagazine.com/2021/03/11/video-cyanogaster-cf-noctivaga-rio-nanay-peru/
References
Mattox, G.M.T., R. Britz, M. Toledo-Piza, and M.M.F. Marinho. (2013). Cyanogaster noctivaga, a remarkable new genus and species of miniature fish from the Rio Negro, Amazon basin (Ostariophysi: Characidae). Ichthyological Exploration of Freshwaters, 23, 297–318.
Schäfer, F. (2016, July 19). Dwarf Tetras from Peru 3: Cyanogaster cf. noctivaga. Aquarium Glaser. https://www.aquariumglaser.de/en/fish-archives/dwarf-tetras-from-peru-3-cyanogaster-cf-noctivaga/
Vari, R.P., B.F. Melo, and C. Oliveira. (2016). Protocheirodon, a new genus of Characidae (Teleostei: Characiformes) with the redescription of the poorly known Protocheirodon pi. Neotropical Ichthyology, 14, 315–322.