Morphology Data of Gempylus serpens
Identification keys
Abnormalities
Main Ref. Nakamura, I. and N.V. Parin, 1993
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features striking shape of body
Body shape lateral elongated
Cross section compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth superior
Type of scales
Diagnosis

Body is elongated and strongly compressed. The mouth is large with fang-like teeth. There are two lateral lines, both originating below the first spine of the dorsal fin. The upper lateral line follows the dorsal contour of the body to the end of the first dorsal fin base. The lower descends gradually posterior to about the tip of the pectoral fin and runs mid-laterally. Body color is uniformly dark brown; all fins dark brown with somewhat darker margins.

Ease of Identification

Meristic characteristics of Gempylus serpens

Lateral Lines 2 Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total 48 - 55

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 2
Finlets No. Dorsal   5 - 6
Ventral  6 - 7
Spines total 27 - 33
Soft-rays total 10 - 14
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 10 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   12 - 15
Pelvics Attributes  joint to one spine only
Position    thoracic  behind origin of D1
Spines     1
Soft-rays   3 - 4
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Reyes, Rodolfo B.
Modified by Froese, Rainer
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