Walker, Ilse (2004). “The food spectrum of the cardinal - tetra (Paracheirodon axelrodi, Characidae) in its natural habitat”. Acta Amazonica34 (1): 69–73. doi:10.1590/S0044-59672004000100009.
Sarah Ragonha de Oliveira; Rondon Tatsuta Yamane Baptista de SouzaI; Érica da Silva Santiago NunesI; Cristiane Suely Melo de CarvalhoI; Glauber Cruz de MenezesI; Jaydione Luíz MarconII; Rodrigo Roubach; Eduardo Akifumi OnoI et al. (2008). “Tolerance to temperature, pH, ammonia and nitrite in cardinal tetra, Paracheirodon axelrodi, an amazonian ornamental fish”. Acta Amazonica38 (4): 773–779. doi:10.1590/S0044-59672008000400023.