Astyanax nasutus Meek 1907. Managua Tetra; Sardina, Sardina Lagunera, Sardinilla, Sabalete, Sardinita, Plateada, Tetra, Sardina del Lago Managua Vouchers: FMNH 5908 (14), 5909 (1) and 5910 (1). Distribution: Central America; endemic to the Lago Xolotlán (Managua), Nicaragua; (Nicaragua) LN (Atlantic); 30–31 masl; Pri, Pot. Occurrence and conservation status: Nat, End; DD (2020), population trend unknown. Literature: Meek (1907: 108; brief description, including an identification key, and information on distribution and ecology), Astorqui (1975: 85, as Hemybrycon sp.— misidentification; brief description, including illustrations and an identification key, and information on distribution and ecology), Villa (1982: 102; detailed description, including illustrations and an identification key, and information on distribution and ecology) and Schmitter-Soto (2017: 62; redescription, including illustrations and an identification key, and information on distribution, with a map, and ecology).

Published as part of Angulo, Arturo, Betts, Joel T., González-Alemán, Néstor J., Castañeda, Edgar, Berghe, Eric Van Den, Elías, Diego J., Mcmahan, Caleb D. & Matamoros, Wilfredo A., 2023, Continental fishes of Nicaragua: diversity, distribution and conservation status; with an annotated and illustrated checklist of species and an identification guide to families, pp. 1-89 in Zootaxa 5376 (1) on page 23, DOI: 10.11646/zootaxa.5376.1.1, http://zenodo.org/record/10208788