Main Ref. | Menezes, N.A. and C.A.S. de Lucena, 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 |
This species is distinguished from R. molossus by having fewer branched anal-fin rays (41-43, versus 43-47). It differs from R. itupiranga by having more anal-fin rays (41-43, versus 38-41), fewer scale rows between lateral line and anal-fin origin (15-16, versus 18-19) and fewer scale rows around caudal peduncle(27-28, versus 30-31). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | |
Pored lateral line scales | 78 - 84 |
Scales in lateral series | |
Scale rows above lateral line | 23 - 26 |
Scale rows below lateral line | 15 - 16 |
Scales around caudal peduncle | 27 - 28 |
Barbels | |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | 11 - 12 |
on upper limb | 3 - 6 |
total | 14 - 18 |
Vertebrae | |
preanal | |
total | 37 - 40 |
Attributes | |
Fins number | |
Finlets No. | Dorsal |
Ventral | |
Spines total | |
Soft-rays total | 11 - 11 |
Adipose fin | present |
Attributes | more or less truncate; more or less normal |
Fins number | |
Spines total | 4 - 5 |
Soft-rays total | 41 - 43 |
Pectoral | Attributes |
Spines | |
Soft-rays 16 - 18 | |
Pelvics | Attributes |
Position | |
Spines | |
Soft-rays 8 - 8 |