Morphology Data of Enneapterygius niger
Identification keys
Main Ref. Fricke, R., 1994
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance always different morphology between mature adults
Different colors always different colors between mature adults
Remarks Males have an overall blackish color pattern, no streaks on the sides of the body, and slightly higher first dorsal fin.

Descriptive characteristics of juvenile and adult

Striking features striking fins
Body shape lateral elongated
Cross section oval
Dorsal head profile clearly concave
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales ctenoid scales

9-12 spines in the second dorsal fin, 8-10 rays in the third dorsal fin, 17-20 anal fin rays, 32-37 + 1 lateral scale rows, 13-19 + 17-22 lateral line scales, two median mandibular pores, a black band on the caudal peduncle, about 9 basal dark spots on the female's anal fin, and a overall blackish coloration of the male.

Ease of Identification

Meristic characteristics of Enneapterygius niger

Lateral Lines 2 Interrupted: No
Scales on lateral line 30 - 41
Pored lateral line scales 15 - 18
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number 3
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 12 - 15
Soft-rays total 8 - 10
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 16 - 19

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   14 - 16
Pelvics Attributes  
Position    jugular  before origin of D1
Spines     1
Soft-rays   2 - 2
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Luna, Susan M.
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