scalaris, Zeus Schultze [F.] in Lichtenstein 1823:114 [Verzeichniss der Doubletten des zoologischen Museums der Königl. Universität zu Berlin, nebst Beschreibung...; ref. 17525] Lower Amazon River, Brazil. Lectotype: ZMB 2833. Possible paralectotypes: ZMB 1347 (1). Type catalog: Paepke & Schindler 2013:270 [ref. 32895]. Lectotype selected by Paepke & Schindler 2002:178, 181 [ref. 26058]. Authorship follows Paepke & Schindler 2002:178 [ref. 26058]. •Valid as Pterophyllum scalare (Schultze 1823) -- (Ortega & Vari 1986:20 [ref. 9708], Kullander 1986:210 [ref. 12439], Fuller et al. 1999:444 [ref. 25838], Keith et al. 2000:208 [ref. 24547], Paepke & Schindler 2002:178 [ref. 26058], Kullander in Reis et al. 2003:641 [ref. 27061], Schindler 2003:82 [ref. 27489], Mundy 2005:422 [ref. 28379], DoNascimiento et al. 2017:100 [ref. 35633], Meza-Vargas et al. 2021:28 [ref. 39298]). Current status: Valid as Pterophyllum scalare (Schultze 1823). Cichlidae: Cichlinae. Distribution: South America: Amazon River basin (Brazil, Colombia, French Guiana, Guyana and Peru); introduced in Suriname. Habitat: freshwater.