Continental fishes of Nicaragua: diversity, distribution and conservation status; with an annotated and illustrated checklist of species and an identification guide to families Author Angulo, Arturo Escuela de Biología, Museo de Zoología / Centro de Investigación en Biodiversidad y Ecología Tropical (CIBET) and Centro de Author Betts, Joel T. 0000-0002-6018-8995 Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Rd # 13, East Lansing, MI 48824, USA joel. t. betts @ gmail. com; https: // orcid. org / 0000 - 0002 - 6018 - 8995 joel.t.betts@gmail.com Author González-Alemán, Néstor J. Unidad de Gestión Técnica de Proyectos - Oficina de Relaciones Internacionales y de Cooperación Externa (ORICE / UGETEP), Author Castañeda, Edgar 0000-0001-8148-3195 Universidad Americana (UAM, Costado Noroeste Camino de Oriente, Managua, Nicaragua edgar. ecologica @ gmail. com; https: // orcid. org / 0000 - 0001 - 8148 - 3195 edgar.ecologica@gmail.com Author Berghe, Eric Van Den 0000-0001-7566-0415 Department of Environment and Development, Zamorano Biodiversity Center. Zamorano University of Tegucigalpa, P. O. Box 93, Honduras evandenberghe @ zamorano. edu; https: // orcid. org / 0000 - 0001 - 7566 - 0415 evandenberghe@zamorano.edu Author Elías, Diego J. Field Museum of Natural History (FMNH). Chicago, Illinois, United States of America delias @ fieldmuseum. org; https: // orcid. org / 0000 - 0003 - 4215 - 0384 cmcmahan @ fieldmuseum. org; https: // orcid. org / 0000 - 0003 - 2113 - 8554 delias@fieldmuseum.org Author Mcmahan, Caleb D. Field Museum of Natural History (FMNH). Chicago, Illinois, United States of America delias @ fieldmuseum. org; https: // orcid. org / 0000 - 0003 - 4215 - 0384 cmcmahan @ fieldmuseum. org; https: // orcid. org / 0000 - 0003 - 2113 - 8554 delias@fieldmuseum.org Author Matamoros, Wilfredo A. wilmatamoros@yahoo.com text Zootaxa 2023 2023-11-27 5376 1 1 89 https://www.mapress.com/zt/article/download/zootaxa.5376.1.1/52351 journal article 10.11646/zootaxa.5376.1.1 1175-5334 10208788 9ECCB3F7-5481-47C2-8A5A-E9A3F38C31BA Poeciliopsis gracilis (Heckel 1848) . Porthole Livebearer; Olomina, Alumina, Pepesca, Guatopote Jarocho Vouchers: UCR 0265-008 (135), 0273-005 (3), 0466-007 (11), 0467-004 (5) and 0473-004 (6); other collections: KU 18698 (1). Distribution: North and Central America; from southern Mexico to northern Nicaragua, Atlantic and Pacific drainages; ( Nicaragua ) Co (Atlantic), Ne, ER and PN (Pacific); 2–678 masl ; Sec, Dia, Amp. Occurrence and conservation status: Nat; LC (2019), population trend unknown. Literature: Astorqui (1975: 112; brief description, including illustrations and an identification key, and information on distribution and ecology), Villa (1982: 135 ; detailed description, including illustrations and an identification key, and information on distribution and ecology) and Ward et al. (2022: 1 ; phylogenetic position, species delimitation and revalidation, including information on distribution, with a map). Remarks: Ward et al. (2022) , based on molecular data, restricted P. gracilis to México. Poeciliopsis gracilis and P. pleurospilus are morphologically and ecologically similar species which have had a widely debated taxonomic history and geographic distribution. Detailed taxonomic studies, based mainly on morphological data, are necessary in order to supporting or discarding this hypothesis and to rename or not the material identified as P. gracilis collected outside of Mexico.