| Main Ref. | Norris, S.M. and M.E. Douglas, 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 |
A species of the C. congicum species group with characters typical of that assemblage. Within this group, C. milleri may be distinguished by the following characters: unusually low fin-spine counts for Ctenopoma (D XIV, A VI-VII), and a distinctive, mottled color pattern. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 26 - 27 |
| 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 | |
| Vertebrae | |
| preanal | 9 - 10 |
| total | 24 - 26 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 14 - 14 |
| Soft-rays total | 9 - 10 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | 6 - 7 |
| Soft-rays total | 10 - 11 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 12 - 13 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |