| Main Ref. | Silva, G.S.C., B.F. Melo, C. Oliveira and R.C. Benine, 2016 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Adult males with bony hooks on distal segments of the first 8 branched rays of the anal fin; 2 bony hooks per segment (Ref. 124043). |
| Striking features | |
| Body shape lateral | |
| Cross section | compressed |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished from all its congeners, except T. ommatus, T. kuluene, by the maxillary teeth 4-6 (vs. 1-4); differs from T. ommatus with the dark mark centered on caudal peduncle (vs. a vertically-oriented mark limited to posterior portion of peduncle); differs from T. anostomus, T. denticulatus, T. kuluene by the principal teeth in dentary 4 (vs. 5-6) and by having more robust teeth on the dentary (vs. thinner, sharper teeth); differs from T. anostomus with a terminal mouth (vs. subsuperior mouth); differs from T. anostomus, T. kuluene by the conspicuous humeral marks 2 (vs. 1); differs from T. denticulatus by the number of scale rows between lateral line and dorsal-fin origin 6 (vs. 7); differs from T. anostomus, T. araguaiensis by the number of gill rakers of the first gill arch 7-8 + 10-12) (vs. 10-12 + 17-20); differs from T. argenteus by the predorsal scales 8 (vs. 11-17); differs from T. carvalhoi by having a rounded dark mark on the caudal peduncle (vs. lozenge-shaped) (Ref. 124043). |
| 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 | 10 - 12 |
| on upper limb | 7 - 8 |
| total | |
| Vertebrae | |
| preanal | 13 - 13 |
| total | 31 - 31 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 9 - 9 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 24 - 28 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 7 - 7 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 11 - 14 |