(12) Phallichthys amates (Miller 1907: 108); Merry widow (En), Olomina (Sp) Figure 4A Body moderately elongate and deep, almost rhomboid, moderately compressed; lateral line reduced to a series of individual pits along side of body; fins without spines; a single dorsal fin; males with anal fin modified into a long gonopodium extending to the caudal fin origin; caudal fin rounded; general coloration yellowish gray or pale yellow (almost transparent in some specimens) with bluish or purplish highlights; in some specimens, scales bordered by black, giving a cross-hatch pattern to the body (this pattern is more intensive along the mid-line of the flanks and sometimes resembles a series of X’s along the body); females usually with prominent black or purple blotch covering base of pelvic and/or anal fins; fins usually transparent or yellowish; maximum body length ca 70 mm SL.

Published as part of Angulo, Arturo, Naranjo-Elizondo, Beatriz, Rojas, Emmanuel & Ley-López, Juan Manuel, 2017, Fishes from the Tirimbina Biological Reserve, La Virgen de Sarapiquí, Heredia, Costa Rica, pp. 683-702 in Check List 13 (5) on page 689, DOI: 10.15560/13.5.683

{"references": ["Miller N (1907) The fishes of the Motagua River, Guatemala. Bulletin of the American Museum of Natural History 23 (2): 95 - 123."]}