Alfaro cultratus (Regan 1908) (Fig. 9E). Knife Livebearer; Olomina, Alumina, Killi, Olomina de (Anastasio) Alfaro Vouchers: UCR 0011-002 (10), 0024-01 (10), 0267-002 (58), 0362-002 (26), 0458-009 (10), 0461-001 (15), 1001- 002 (2), 1002-001 (1), 1004-001 (12), 1051-008 (31), 1052-023 (85), 1053-008 (1), 1054-011 (1), 1055-003 (20), 1057-009 (4), 1062-002 (46), 3222-003 (1), 3224-005 (1) and 3225-001 (1); FMNH 84997 (5); LSUMZ 15413 (95) and 15429 (1); other collections: ANSP 169229 (1), IBUNAM 13796 (1), 13799 (1), 13800 (1), 13801 (1), 13802 (1), 13803 (1), 13804 (1), 13805 (1), 13806 (1), 13807 (1), UMMZ 180637 (1), 180638 (1), 188128 (1), 196942 (1) and 199645 (1). Distribution: Central America; from eastern Honduras to western Panama, Atlantic and Pacific drainages; (Nicaragua) WK, Pr, GM, KP, Es, BF, IM, To, Sa, SJ, RF and LN (Atlantic); 3–600 masl; Sec, Pot. Occurrence and conservation status: Nat; LC (2020), population trend stable. Literature: Astorqui (1975: 105; brief description, including illustrations and an identification key, and information on distribution and ecology), Villa (1982: 128; detailed description, including illustrations and an identification key, and information on distribution and ecology), Bussing (1998: 192; brief description, including illustrations and an identification key, and information on distribution, with a map, and ecology), van den Berghe (2015: 34, as Alfari cultratus —misspelled; listed, including an illustration and information on distribution and ecology) and Angulo (2021: 54; listed, including information on distribution).

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 58, DOI: 10.11646/zootaxa.5376.1.1, http://zenodo.org/record/10208788