Aphyocheirodon hemigrammus Eigenmann 1915
Creators: name: Ota, Renata Rúbia
name: Deprá, Gabriel de Carvalho
name: Graça, Weferson Júnio da
name: Pavanelli, Carla Simone
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Characiformes
Characidae
Aphyocheirodon
Aphyocheirodon hemigrammus

description: <i>Aphyocheirodon hemigrammus</i> Eigenmann, 1915 <b>Fig. 10</b> Body elongated; greatest body depth contained 2.3 to 3.1 and caudal peduncle depth 9.2 to 10.0 times in SL; head length 3.5 to 4.2, predorsal distance 1.8 to 2.0 and caudal peduncle length 6.6 to 8.8 in SL; snout length 3.7 to 4.4, horizontal orbital diameter 2.8 to 3.2 and least interorbital width 3.0 to 3.4 in HL. Mouth terminal; premaxilla with 8-11 teeth, dentary with 20 to 26 teeth and expanded tips, and maxilla with 3-5 teeth. Lateral line incomplete, with 6-9 pored scales; longitudinal series with 34-36 scales; transverse series above lateral line with 5 or 6 scale rows and below with 3 or 4 scale rows. Dorsal fin with 10 or 11 rays, pectoral fin with 11 or 12 rays, pelvic fin with 8 or 9 rays, anal fin with 25-27 rays and caudal fin with 19 rays. Ground color pale yellow; dark-brown longitudinal stripe on flank, from pseudotympanum to caudal peduncle; darkbrown blotch occupying whole caudal peduncle depth and caudal-fin base; dark-brown stripe along anal-fin base. <b>Maximum standard length.</b> 37.7 mm. <b>Biological data.</b> Lives in creeks and lagoons (Agostinho et al., 1995). <b>Distribution.</b> Upper rio Paraná basin. <b>Remarks.</b> Some specimens of <i>A. hemigrammus</i> were identified as <i>Serrapinnus</i> sp. 1 by Graça, Pavanelli (2007). Both species occur in the upper rio Paraná floodplain, where <i>A. hemigrammus</i> has been captured since 2004. <i>Aphyocheirodon hemigrammus</i> can be distinguished by having the central cusp of dentary teeth of same size and with straight edge, and the anal fin of mature males without bony hooks (<i>vs.</i> central cusp of dentary teeth much longer than lateral ones, and anal fin of mature males with bony hooks, in <i>Serrapinnus</i> sp. 1). Some specimens of <i>A. hemigrammus</i> do not present predorsal series of scales, whereas other specimens only present scales next to dorsal fin. Eigenmann (1915) described that species from the rio Grande, upper rio Paraná basin in Minas Gerais State, Brazil, and stated that the species has “predorsal area rounded, with a median series of about twelve scales”. As no other distinguishing characters were observed, the specimens analyzed herein was considered as belonging to the same species, despite the apparently disrupted distribution of the species.
description: Published as part of <i>Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da &amp; Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, pp. 1-111 in Neotropical Ichthyology 16 (2)</i> on page 36, DOI: 10.1590/1982-0224-20170094, http://zenodo.org/record/3678395
description: {"references": ["Eigenmann CH. The Cheirodontinae, a subfamily of minute characid fishes of South America. Mem Mus Comp Zool. 1915; 7 (1): 1 - 100.", "Agostinho AA, Vazzoler AEAM, Thomaz SM. The high river Parana basin: limnological and ichthyological aspects. In: Tundisi JG, Bicudo CEM, Matsumura-Tundisi T, editors. Limnology in Brazil. Rio de Janeiro: Brazilian Academy of Science and Brazilian Limnological Society; 1995. p. 59 - 103.", "Pavanelli CS, Graca WJ, Zawadzki CH, Britski HA, Vidotti AP, Avelino GS, Verissimo S. Fishes from the Corumba Reservoir, Paranaiba River drainage, upper rio Parana basin, State of Goias, Brazil. Check List. 2007; 3 (1): 58 - 64."]}