Characiformes

Albornoz-Garzón, Juan G., Conde-Saldaña, Cristhian C., López-Delgado, Edwin O., García-Melo, Jorge E. & Villa-Navarro, Francisco A., 2020, Fishes from the Río Alvarado drainage, Upper Río Magdalena Basin, Colombia, Check List 16 (5), pp. 1181-1198: 1193-1194

publication ID

http://doi.org/ 10.15560/16.5.1181

persistent identifier

http://treatment.plazi.org/id/03E53859-DA33-263F-9658-6E14FCF89E72

treatment provided by

Marcus

scientific name

Characiformes
status

 

Characiformes  

1 Upper lip present; premaxilla with conical or multi- cuspid teeth ...............................................................2

1′ Upper lip absent; premaxilla with spatulate teeth ..... ....... Parodontidae   : Parodon magdalenensis   ( Fig. 2C)

2 Pectoral-fin with one unbranched ray .......................3

2′ Pectoral-fin with two or more unbranched rays.......... Crenuchidae   : Characidium phoxocephalum   ( Fig. 2A)

3 Adipose fin present; caudal fin not rounded ............... .............................................................. Characidae   : 4

3′ Adipose fin absent; caudal fin rounded....................... ............ Erythrinidae   : Hoplias malabaricus   ( Fig. 2B)

4 Mouth without external teeth on premaxilla ............5

4′ Mouth with external teeth on premaxilla ................... ............................................. Roeboides dayi   ( Fig. 2L)

5 Mouth with four teeth on inner premaxillary row; fins usually yellowish or dark ..........................................6

5′ Mouth with five teeth on inner premaxillary row; fins usually reddish ........................ Astyanax sp.   ( Fig. 2D)

6 Mouth subterminal; anal fin with 13 or fewer branched rays ............................................................................7

6′ Mouth terminal or superior; anal fin with more than 13 branched rays...................................................... 10

7 Mouth with three irregular rows of premaxillary teeth ...........................................................................8

7′ Mouth with two rows of premaxillary teeth ............... ...................................... Microgenys minuta   ( Fig. 2K)

8 Eye diameter less than 26.8% of head length; third infraorbital not in contact with preopercle ................. ...................................... Creagrutus dulima   ( Fig. 2G)

8′ Eye diameter more than 27.2% of head length; third infraorbital in contact with preopercle .....................9

9 Middle caudal-fin rays with dark stripe; humeral blotch vertically elongated; anal fin usually with 11 to 13 branched rays............. Creagrutus affinis   ( Fig. 2F)

9′ Middle caudal-fin rays without dark stripe; humeral blotch ovoid; anal fin usually with 9 to 11 branched rays ....................... Creagrutus magdalenae   ( Fig. 2H)

10 Mouth superior; dorsal-fin origin behind anal-fin ori- gin................... Gephyrocharax melanocheir   ( Fig. 2I)

10′ Mouth terminal; dorsal-fin origin anterior to anal-fin origin ....................................................................... 11

11 Anal fin with more than 30 branched rays; caudal fin without horizontal dark stripe; males with a pouch of scales at base of caudal fin .......................................... .......................... Argopleura magdalenensis   ( Fig. 2E)

11′ Anal fin with less than 30 branched rays; caudal fin with horizontal dark stripe; males without a pouch of scales at base of caudal fin .... Hemibrycon sp.   ( Fig. 2J)