| Referencia principal | Ferreira, K.M. and F.C.T. Lima, 2006 |
| El aspecto se refiere a | |
| Bones in OsteoBase |
| órganos especializados | |
| diverso aspecto | males alike females |
| diversos colores | males alike females |
| Observaciones |
| Características llamativas | |
| Forma lateral del cuerpo | |
| Sección transversal | |
| Perfil dorsal de la cabeza | |
| Tipo de ojos | |
| Tipo de boca/hocico | |
| Posición de la boca | terminal |
| Type of scales | cycloid scales |
| Diagnosis |
Distinguished from all other species of Knodus by the presence of thickened skin forming folds covering the basal portion of the six anteriormost branched anal-fin rays and its interradial membrane. Differs also uniquely among its congeners by having the six anteriormost branched rays associated with more developed skin considerably thicker than that on the remaining anal-fin rays. Can be differentiated also from all congeners, except Knodus meridae, by the low number of branched anal-fin rays (14-16 vs. more than 17), by the presence of relatively compressed teeth (vs. teeth bulky in remaining Knodus and Bryconamericus species, with the exception of Bryconamericus deuteronoides), and the presence of a broad, silvery-gray midlateral stripe (midlateral stripe in remaining Knodus and Bryconamericus species relatively narrow) (Ref. 75965). Description: Dorsal fin ii,8; Anal fin vii, 14, 15 or 16; Pectoral fin i+10 or 11; Pelvic fin i6i (Ref. 75965). |
| Facilidad de identificación |
| Líneas laterales | interrumpido: No |
| Escalas en la línea lateral | 38 - 42 |
| Escalas de la línea lateral con poros | 38 - 42 |
| Escalas en las series laterales | |
| Filas de escalas sobre la línea lateral | 5 - 5 |
| Filas de escalas debajo de la línea lateral | 3 - 3.5 |
| Escalas alrededor del peduncule caudal | 14 - 14 |
| Barbillas | |
| Hendiduras branquiales (solamente tiburones/rayas) | |
| Branquispinas | |
| en el miembro inferior | |
| en el miembro superior | |
| total | |
| Vértebra | |
| preanal | |
| total | 38 - 38 |
| Cualidades | no striking attributes |
| Número de las aletas | 1 |
| número de pínnulas | Dorsal |
| Ventral | |
| total de espinas | |
| Total de rayos suaves | 10 - 10 |
| Aleta adiposa | present |
| Cualidades | forked |
| Número de las aletas | |
| total de espinas | |
| Total de rayos suaves | 21 - 23 |
| Pectoral | Cualidades more or less normal |
| espinas | |
| Rayos-suaves 11 - 12 | |
| Pélvicas | Cualidades more or less normal |
| posición abdominal beneath origin of D1 | |
| espinas | |
| Rayos-suaves 8 - 8 |