Datos morfológicos de Hemibrycon polyodon
Claves de identificación
Abnormalities
Referencia principal Bertaco, V.A. and L.R. Malabarba, 2010
El aspecto se refiere a
Bones in OsteoBase

Atributos sexuales

órganos especializados
diverso aspecto
diversos colores
Observaciones Males have bony hooks on the dorsal-, pectoral-, anal- and pelvic-fin rays; slightly differ in pectoral- and pelvic-fin lengths compared to females; anal-fin shape convex (vs. nearly straight in females); no gill glands in either males or females (Ref. 85819).

Características descriptivas del juvenil y del adulto

Características llamativas
Forma lateral del cuerpo elongated
Sección transversal compressed
Perfil dorsal de la cabeza
Tipo de ojos
Tipo de boca/hocico
Posición de la boca
Type of scales cycloid scales
Diagnosis

This species is distinguished from most of its congeners by the number of branched anal-fin rays (24-28 vs. 15-24 or 28-34); differs from species sharing similar lateral line counts in the following: from H. boquiae by the number of scale rows above and below lateral line (8 and 6 vs. 6-7 and 4-5 respectively), and by the number of predorsal scales (15-17 vs. 12-15); from H. brevispini and H. cairoense by the number of scale rows above lateral line (8 vs. 6-7); from H. dariensis, H. divisorensis, H. surinamensis and H. taeniurus by the number of lateral line scales (42-45 vs. 39-42); from H. huambonicus by the number of caudal peduncle scales (16 vs. 18-20), head length (20.9-22.9 vs. 22.0-26.0% SL), and upper jaw length (43.7-45.6 vs. 45.2-52.6% HL); from H. inambari by the number of scales along anal-fin base scale sheath (14-23 vs. 6-10); from H. jabonero by the number of caudal peduncle scales (16 vs. 14), and number of scale rows below lateral line (6 vs. 4-5); from H. jelskii by the number of maxillary teeth (7-10 vs. 8-17), and by the size of humeral spot (6-7 vs. 7-9 horizontal series of scales); from H. metae by the number of cusps of second tooth of premaxillary inner row teeth (5 vs. 7), caudal peduncle length (14.4-16.6 vs. 11.1-14.8% SL), and head length (20.9-22.9 vs. 22.1-25.0% SL); from H. quindos by the number of scale rows above and below of lateral line (8 and 6 vs. 6-7 and 4-5); from H. rafaelense by the number of predorsal scales (15-17 vs. 10-13), orbital diameter (29.5-34.1 vs. 36.6-43.6% HL), and interorbital width (32.1-35.3 vs. 34.7-41.5% HL); from H. raqueliae and H. yacopiae by the number of predorsal scales (15-17 vs. 10-14), and by the number of cusps of first maxillary tooth (3 vs. 5 in H. raqueliae); from H. surinamensis and H. divisorensis by the absence of a wide black asymmetrical spot covering base of caudal-fin rays; H. dariensis by the absence of pigment in the distal tip of rays just above and below to middle caudal-fin rays (Ref. 85819).

Facilidad de identificación

Características merísticas de Hemibrycon polyodon

Líneas laterales interrumpido: No
Escalas en la línea lateral 42 - 45
Escalas de la línea lateral con poros
Escalas en las series laterales
Filas de escalas sobre la línea lateral 8 - 8
Filas de escalas debajo de la línea lateral
Escalas alrededor del peduncule caudal 16 - 16
Barbillas
Hendiduras branquiales (solamente tiburones/rayas)
Branquispinas
en el miembro inferior 11 - 13
en el miembro superior 7 - 8
total
Vértebra
preanal 18 - 19
total 40 - 43

Aletas

Aleta(s) dorsal(es)

Cualidades
Número de las aletas
número de pínnulas Dorsal   
Ventral  
total de espinas
Total de rayos suaves 8 - 8
Aleta adiposa

Aleta caudal

Cualidades

Aleta(s) anal(es)

Número de las aletas
total de espinas
Total de rayos suaves 24 - 28

Aletas apareadas

Pectoral Cualidades  
espinas     
Rayos-suaves   6 - 6
Pélvicas Cualidades  
posición    
espinas     
Rayos-suaves   10 - 12
Referencia principal (por ej. 9948)
Glosario ( por ej. cephalopods )
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