Morphology Data of Gymnocephalus cernua
Identification keys
Abnormalities
Main Ref. Keith, P. and J. Allardi (coords.), 2001
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Distinguished uniquely from its congeners by its body depth 24-27% SL. Differs further from other members of the genus by the combination of having a flank yellowish with numerous, small, irregular, dark blotches and having 11-16 dorsal spines (Ref. 59043). Caudal fin with 16 to 17 rays (Ref. 40476). Dorsal fins are fused. Color brownish with dark spots (Ref. 35388).

Ease of Identification

Meristic characteristics of Gymnocephalus cernua

Lateral Lines Interrupted: No
Scales on lateral line 34 - 40
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 5 - 9
Scale rows below lateral line 16 - 21
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 10 - 13
Vertebrae
preanal
total 35 - 36

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 11 - 19
Soft-rays total 11 - 16
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 5 - 6

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   13 - 16
Pelvics Attributes  more or less normal
Position    thoracic  beneath origin of D1
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Sa-a, Pascualita
Modified by Reyes, Rodolfo B.
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