Morphology Data of Nematabramis alestes
Identification keys
Main Ref. Herre, A.W.C.T., 1924
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

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

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

Meristic characteristics of Nematabramis alestes

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


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total 2 - 2
Soft-rays total 8 - 9
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 12 - 14

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   11 - 12
Pelvics Attributes  more or less normal
Spines     1
Soft-rays   6 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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