Morphology Data of Sewellia marmorata
Identification keys
Main Ref. Freyhof, J. and D.V. Serov, 2000
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Body without dark stripes. Cavity with deep post-oral skinfold around mouth. A submarginal band on posterior part of paired fins. Origin of pectoral fin behind corner of the mouth. Origin of pelvic in front of dorsal-fin origin; pelvic fin reaching anal-fin origin; dorsal keels on pelvic-fin rays continuously or marginally serrated. Absence of skin-fold between oropectoral membrane and ventral surface of head. Lateral line with 40-47 scales (Ref. 40433).

Description: dorsal fin with 3 simple and 8 branched rays, last one split to base; anal fin with 2 simple and 4 branched rays, second simple ray flat with fine lateral serration, posteriormost part of this ray soft and articulated; pectoral fin with 1 simple and 23-24 branched rays, last rays covering anterior part of pelvic, reaching vertical of base of branched pelvic-fin rays 5-8; pelvic fin with 1, rarely 2, simple and 19-21 branched rays, mostly reaching anal-fin origin (Ref. 40433).

Ease of Identification

Meristic characteristics of Sewellia marmorata

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 40 - 47
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
total 33 - 34


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Position    thoracic  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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