Main Ref. | Herre, A.W.C.T., 1924 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
Striking features | none |
Body shape lateral | short and / or deep |
Cross section | compressed |
Dorsal head profile | clearly convex |
Type of eyes | more or less normal |
Type of mouth/snout | more or less normal |
Position of mouth | terminal |
Type of scales | |
Diagnosis |
Specimens dusky above, pale or pale-yellowish sides and belly; opercle and preopercle silvery; scales outlined by dark dots. Head naked; mouth large, oblique; upper thin lip slightly protractile with a median notch into which fits a small knob on tip of lower lip. Pectoral pointed, tip extending beyond origin of small ventrals; caudal slightly longer than head with the lower lobe larger. Belly with a sharp, cutting edge. Barbels shorter than head; number of anal fin rays smaller than N. everetti and N. steindachneri. 22-23 scales from nape to dorsal. |
Ease of Identification |
Lateral Lines | 1 Interrupted: No |
Scales on lateral line | 34 - 37 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | 5.5 - 7.5 |
Scale rows below lateral line | 1.5 - 1.5 |
Scales around caudal peduncle | 12 - 14 |
Barbels | 0 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | 2 - 2 |
Soft-rays total | 8 - 9 |
Adipose fin | absent |
Attributes | forked; more or less normal |
Fins number | 1 |
Spines total | 3 - 3 |
Soft-rays total | 12 - 14 |
Pectoral | Attributes more or less normal |
Spines 1 | |
Soft-rays 11 - 12 | |
Pelvics | Attributes more or less normal |
Position | |
Spines 1 | |
Soft-rays 6 - 5 |