Main Ref. | Zanata, A.M. and P. Camelier, 2009 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | always different morphology between mature adults |
Different colors | |
Remarks | Males differ from females by having the following characters: presence of bony hooks on anal fin rays; anal fin border somewhat strainght to slightly concave (vs. concave on anterior half in females); distal portion of first pelvic-fin rays distinctly darker than females; slightly higher body depth; longer pectoral fin and pelvic fin; and shorter anal-fin lobe (Ref. 81202). |
Striking features | |
Body shape lateral | fusiform / normal |
Cross section | |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Type of scales | cycloid scales |
Diagnosis |
Diagnosed from all its congeners from northeastern Brazilian drainages by having distal portion of pelvic fins dark, a combination of sexually dimorphic characters, posteroventral portion of body and fins (except pectoral) reddish in life, and inconspicuous humeral and caudal spots. Can be further distinguished by having the following characters: highest body depth just anterior of dorsal-fin origin, scales on lateral line 32-34; five series of scales between dorsal origin and lateral line; three series of scales between lateral line and pelvic-fin origin; anal fin with 20-23 branched rays; dorsal usually ii,8,i; base of anterior anal-fin rays with 8-12 scales; one or two maxillary teeth; presence of no more than 5 cusps and dentary teeth abruptly decreasing in size posteriorly (Ref. 81202). Description: Dorsal-fin rays ii,8, ii,8,i, or ii,9; anal-fin rays iii,20, 21, 22, or 23; pectoral-fin rays i,9, 10, 11, or 12; pelvic-fin rays i,6 or 7. Scales rows between lateral line and pelvic-fin insertion 3 (Ref. 81202). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 32 - 34 |
Pored lateral line scales | 32 - 34 |
Scales in lateral series | |
Scale rows above lateral line | 5 - 5 |
Scale rows below lateral line | |
Scales around caudal peduncle | 14 - 14 |
Barbels | |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total | 33 - 33 |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | |
Soft-rays total | 10 - 11 |
Adipose fin | present |
Attributes | forked |
Fins number | |
Spines total | |
Soft-rays total | 23 - 26 |
Pectoral | Attributes more or less normal |
Spines | |
Soft-rays 10 - 13 | |
Pelvics | Attributes more or less normal |
Position abdominal before origin of D1 | |
Spines | |
Soft-rays 7 - 8 |