Geophagus

López-Fernández, Hernán & Taphorn, Donald C., 2004, Geophagus abalios, G. dicrozoster and G. winemilleri (Perciformes: Cichlidae), three new species from Venezuela, Zootaxa 439, pp. 1-27: 23

publication ID

10.5281/zenodo.157563

publication LSID

lsid:zoobank.org:pub:0288D909-8064-4FFC-92EC-6FFB5FED25CD

persistent identifier

http://treatment.plazi.org/id/039EFA2C-FFED-FFFB-FEB7-E92AFAEF8096

treatment provided by

Plazi

scientific name

Geophagus
status

 

Key to the Venezuelan species of Geophagus 

1 Infraorbital stripe complete ( Fig. 1View FIGURE 1), extending from ventral edge of orbit to edge of preopercule or dorsal half of interopercule ................................................................. 2

­ Infraorbital stripe absent, or reduced to a dark mark on preopercule ( Fig. 1View FIGURE 1) .............. 3

2 Dorsal fin base with sheath of scales; faint horizontal stripes on flank G. taeniopareius 

­ Dorsal fin base without sheath of scales; no horizontal markings on flank ................... ........................................................................................................... G. grammepareius 

3 Base of gill filaments on first gill arch largely covered by broad flap of skin; no discernible lateral bars on preserved specimens ( Fig. 2View FIGURE 2 e); Cuyuní river drainage ............. ........................................................................................................... G. brachybranchus 

­ Base of gill filaments on first gill arch narrowly covered with skin at base; 4 to 7 lateral bars on preserved specimens; Orinoco or Río Negro drainages .......................... 4

4 Seven dark bars on flank, with bars 4 and 5 forming a “ Y ” pattern; ventral margin of caudal peduncle contained 1.1 to 1.3 times in dorsal margin of caudal peduncle; subopercule caudoventrally naked ( Fig. 2View FIGURE 2 a).................................................... G. dicrozoster 

­ Fewer than seven bars on flank; ventral margin of caudal peduncle contained 1.5 to 1.6 times in dorsal margin of caudal peduncle; subopercule fully scaled ......................... 5

5 Dorsal lobe of caudal fin with accessory lateral line extension between rays D 3 and D 4; preopercular mark present; four, broad and parallel, caudo­ventrally inclined lateral bars on flank ( Fig. 2View FIGURE 2 c) ....................................................................... G. winemilleri 

­ Dorsal lobe of caudal fin without accessory lateral line extension; preopercular mark absent; six, vertical and parallel bars on flank ( Fig. 2View FIGURE 2 b) ................................ G. abalios