| Main Ref. | Roberts, T.R. and C.J. Ferraris Jr., 1998 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Head and body silvery, without pattern. Fins, except caudal fin, black distally, with clear basal portions; caudal fin entirely clear. Dorsal spine extending well past adipose-fin origin when adpressed. Anal fin with 5-6 simple rays, 11 branched rays. Premaxilla with 4 rows of teeth. Most similar to G. melanopterus in coloration and having the highest gill raker counts among its congeners (Ref. 40780). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| 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 | 10 - 13 |
| Vertebrae | |
| preanal | 18 - 19 |
| total | 38 - 39 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 1 - 1 |
| Soft-rays total | 6 - 6 |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines 1 | |
| Soft-rays 7 - 9 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays |