Astyanax nicaraguensis Eigenmann & Ogle 1907 (Fig. 7B). Nicaraguan Tetra; Sardina, Sardina de Río, Sardinilla, Sabalete, Sábalo, Sardina Común, Plateada, Machaca, Coliroja, Picaculo, Golosa, Tetra, Mojarra, Sardina Nicaraguense

Vouchers: UCR 0024-008 (58), 0052-005 (45), 0063-001 (10), 0182-003 (238), 0183-003 (9), 0184-002 (165), 0242-006 (1), 0265-001 (10), 0267-008 (1), 0268-002 (18), 0269-004 (12), 0273-006 (5), 0274-005 (22), 0275-003 (1), 0447-004 (17), 0448-004 (10), 0457-001 (156), 0458-005 (241), 0460-002 (78), 0461-011 (151), 0462-001 (51), 0464-002 (2), 0467-001 (10), 0473-003 (2), 0536-007 (22), 0546-008 (71), 0547-004 (39), 0548-003 (44), 0549-003 (4), 0550-003 (8), 0551-001 (3), 0552-002 (52), 0553-001 (45), 1001-001 (6), 1002-002 (10), 1003-006 (7), 1004- 007 (6), 1050-006 (2), 1051-001 (32), 1052-009 (42), 1053-011 (77), 1054-008 (5), 1055-002 (203), 1057-001 (3), 1058-004 (1), 1065-001 (112), 1066-004 (63), 3122-004 (1), 3123-001 (2) and 3133-001 (18); FMNH 5911 (71), 5912 (53), 5913 (26), 5914 (2), 5915 (6), 33065 (12), 33857 (86) and 71511 (4); LSUMZ 15305 (14), 15325 (38), 15334 (9), 15352 (14), 15363 (27), 15374 (24), 15384 (3), 15385 (179), 15392 (28), 15420 (30), 15421 (106), 15432 (4), 15449 (12), 15458 (30), 15459 (1), 15466 (40), 15467 (43), 15474 (2), 17142 (21) and 17158 (16). Distribution: Central America; from northern Nicaragua to eastern Costa Rica, Atlantic drainages; (Nicaragua) Co, UI, WK, Pr, GM, KP, Es, BF, IM, To, Sa, SJ, RF and LN (Atlantic); 0–711 masl; Pri, Pot. Occurrence and conservation status: Nat; LC (2020), population trend stable. Literature: Meek (1907: 108, as A. aeneus, in part—misidentification; brief description, including an identification key, and information on distribution and ecology), Fowler (1923: 26, as as A. aeneus, in part—misidentification; brief description, including information on distribution), Astorqui (1975: 81, as Astyanax fasciatus (Cuvier 1819), in part—misidentification; brief description, including illustrations and an identification key, and information on distribution and ecology), Villa (1982: 101, as A. fasciatus (Cuvier 1819), in part—misidentification; detailed description, including illustrations and an identification key, and information on distribution and ecology), Bussing (1998: 79, as A. aeneus, in part—misidentification; brief description, including illustrations and an identification key, and information on distribution, with a map, and ecology), González-Alemán (2006: 37, as A. aeneus, in part—misidentification; brief description, including an illustration, and information on distribution and ecology), Schmitter-Soto (2017: 1393; redescription, including illustrations and an identification key, and information on distribution, with a map, and ecology), Gros & Miguel-Frithz (2010: 223, as A. aeneus, in part—misidentification; brief description, including illustrations, and information on distribution and ecology, plus indigenous science and ethnoichthyology), van den Berghe (2015: 35, as A. aeneus —misidentification; listed, including an illustration and information on distribution and ecology), Angulo et al. (2018: 1867; identification key and information on distribution) and Angulo (2021: 26; listed, including information on distribution).