| Main Ref. | Guimarães, R.Z.P., G.W. Nunan and J.L. Gasparini, 2010 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished from its southwestern Atlantic congeners by the following set of characters: body elongated, its depth 19-22 % SL (vs. 23-25 % SL in M. triangulatus and 24-28 % SL in M. delalandei); lateral line scales typically 62-66 (vs. 50-53 in M. triangulatus and 51-53 in M. delalandei); presence of two longitudinal rows of dark brown spots aligned on sides of body (vs presence of dark, reverse-triangle shaped bars in M. triangulatus and presence somewhat irregular dark bars in M. delalandei) (Ref. 85053). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 61 - 66 |
| 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 | |
| total |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 20 - 20 |
| Soft-rays total | 12 - 13 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | 2 - 2 |
| Soft-rays total | 20 - 22 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 14 - 15 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 3 - 3 |