Kaliwatan sa isda ang Crenicichla cyclostoma^[1]. Una ning gihulagway ni Alex Ploeg ni adtong 1986.^[2] Ang Crenicichla cyclostoma sakop sa kahenera nga Crenicichla, ug kabanay nga Cichlidae.^[1][3] Walay nalista nga matang nga sama niini.^[1]

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 42886756. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ IBAMA (2004) Instrução normativa no. 5 de 21 de maio de 2004. Anexo 1. , http://www.ibama.gov.br/rec_pesqueiros/legislacao.php?id_arq=98. Accessed in August 9th, 2010.
3. ↑ Froese R. & Pauly D. (eds). (2019). FishBase (version Feb 2018). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.