| Main Ref. | Marinho, M.M.F. and F. Langeani, 2010 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | No sexual dimorphism observed. |
| Striking features | |
| Body shape lateral (shape guide) | short and / or deep |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | cycloid scales |
| Diagnosis |
This species is distinguished from its congeners, except species those included in the M. lepidura group by the following: a dark blotch on the upper caudal-fin lobe, the lower lobe is hyaline or light grey (vs. caudal lobes hyaline or with a black blotch on both lobes). It is distinguished from the species of M. lepidura group by the absence of a humeral spot (vs. presence) and in having a roughly triangular and dark spot at the caudal-fin base, extending posteriorly along the middle caudal-fin rays, and distinctly separate from the spot on the upper caudal-fin lobe (vs. middle caudal-fin rays hyaline or dark and no triangular spot separated from upper caudal-fin spot) (Ref. 85060). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 31 - 33 |
| 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 | 19 - 20 |
| Vertebrae | |
| preanal | 13 - 13 |
| total | 32 - 33 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 8 - 9 |
| Adipose fin |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 10 - 12 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 7 - 7 |