Identification Key of Geophagus Red Head - Geophagus megasema

Geophagus megasema - 3rd WOOD RIVER

1 ”- Absence of a dark spot on the posterior end of the operculum .......................................................................................................... 3

3 ”-“ American ”type lip arrangement, ie the dental skin folds over that of the posterior end of the premaxilla ......................................................6

6 ”- More than one set of jaw teeth, all movable (depressible) teeth .......................................................................................................... 7

7 ”- First branchial arch with short and less numerous tracks (40 or fewer tracks) ............................................................................................... 9

9 ”- Scales of the lateral line with a sensory channel .................. 11

11 '- Bone and cutaneous expansion of the upper region of the first branchial arch forming a well developed lobe ................................................12

12 ”- Flank spot absent or mid-body in mid-lateral position ........ 13

13 ”- More than 13 tracks in the first keratobranchial ................... 15

15 '- Anterior half of the area between the infraorbitals and the exposed portion of the scaleless preopercle; interradial membranes near the base of the dorsal fins covered by series of small scales ..................... Geophagus megasema

Referência: QUEIROZ, L. J.; VILARA, G. T.; OHARA, W. M.; PIRES, T. H. S.;. ZUANON, J.; DORIA, C. R. C. Peixes do Rio MadeiraVolume 3, 2013

Geophagus megasema  Heckel, 1840

According to FISHBASE:

Kingdom = Animalia ; Phylum = Chordata ; Class = Actinopterygii ; Perciformes ; Family = Cichlidae ; Genus =
Geophagus.

Distribution: South America: Amazon River Basin, Guaporé River Basin.

Size - Maximum Length: 18,9 cm.

Synonyms: Geophagus megasema.

Common name of Geophagus megasema: Cará, Acará Papa-Terra, Chaperema, Geophagus Red Head.

Reference: Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.

 

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