| Main Ref. | DeMarais, B.D., 1991 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Differs morphometrically from G. purpurea in having on average a shallower caudal peduncle, shorter mean distance from origin of pectoral fin to origin of pelvic fin and longer upper jaw. Differs from G. ditaenia in its shorter caudal peduncle and longer post-orbital mean lengths and an average of 57 vs. 68 scales in the lateral line. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 49 - 65 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 4 - 9 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 7 - 8 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 7 - 8 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 12 - 16 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 7 - 8 |