Róbalo blanco

Centropomus undecimalis (Bloch 1792)

Centropomus undecimalis (Bloch 1792) . Common Snook; Róbalo Blanco, Róbalo Común Vouchers: UCR 0364-001 (3); LSUMZ 15344 (2) and 15376 (4). Distribution: Western Atlantic Ocean; from South Carolina, USA, to southern Brazil; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) Co, Es, BF, To, Sa, SJ, RF and LN (Atlantic); 0–75 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2019), population trend unknown. Literature: Astorqui (1975: 149; brief description, including illustrations and an identification key, and information on distribution and ecology), Villa (1982: 160; detailed description, including illustrations and an identification key, and information on distribution and ecology), Bussing (1998: 272; brief description, including illustrations and an identification key, and information on distribution, with a map, and ecology), González-Alemán (2006: 35; brief description, including an illustration, and information on distribution and ecology), Gros & Miguel-Frithz (2010: 107; brief description, including illustrations, and information on distribution and ecology, plus indigenous science and ethnoichthyology), van den Berghe (201

Continental fishes of Nicaragua: diversity, distribution and conservation status; with an annotated and illustrated checklist of species and an identification guide to families

discussion

References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 171; 1998: 272; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 999; listed, including taxonomic information and distributional data) and Robertson & Van Tassell (2019: 3462; detailed description, including illustrations, information on distribution, with a map, and ecology).

New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist

distribution

Distribution: Global: Western Atlantic Ocean; from South Carolina, USA, to southern Brazil; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: To, Pa, Ma and Si (Atlantic), 0 – 50 m. a. s. l., Per, Dia.

New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist

description

Description. Morphometrics and meristics data are summarized in Tables 8, 9 and 10 on the basis of 113 specimens, 77 – 755 mm TL (233.4 mm average). Body elongate, head moderately compressed, head height 20.4 % SL (17.1 % – 28.7 %); body relatively low, deepest body depth 22.9 % SL (17.5 % – 30.0 %); largest specimen measured 628 mm SL. Lower jaw protractile, longer than upper jaw, extending beyond tip of snout. Snout narrow and long comprising in average 11.8 % (9.7 % – 14.4 %) of SL; eye relatively small, preoperculum margin heavily serrated in adults; operculum margin smooth, without spines, bordered by a membrane that extends beyond origin of pectoral fin. 2 – 6 small spines in dorsal part of operculum. Dorsal fins separated by a small gap, not connected by membrane, first dorsal fin VII – VIII, second dorsal fin I, 10 – I, 11. Pectoral fin with 14 – 16 rays, longest ray 18.3 % SL (13.4 % – 25.4 %), extending beyond origin of pelvic fin. Pelvic fin I, 5, longest pelvic ray not reaching anus. Anal fin III, 7 (rarely III, 6 or III, 8), longest spine, when adpressed, not reaching caudal-fin base. Caudal fin deeply forked; lateral line dark with ctenoid scales extending onto caudal

Taxonomy of Centropomus Lacépède, 1802 (Perciformes: Centropomidae), with focus on the Atlantic species of the genus