Morphology Data of Acipenser ruthenus
Identification keys
Abnormalities
Main Ref. Stresemann, E., 1974
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

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 ganoid scales
Diagnosis

Back and flanks are beige. Five rows of scutes : 12-17D, 57-71L, 10-19V. Ventrals and laterals are very light-colored, nearly white. Narrow and pointed snout with four long and fringed barbels. Inferior lip clearly slit (Ref. 40476). Can be diagnosed from congeners in Europe by having 56-71 lateral scutes, first dorsal scute not fused with head, barbels fimbriate, lower lip interrupted in middle and 11-27 gill rakers (Ref. 59043).

Ease of Identification

Meristic characteristics of Acipenser ruthenus

Lateral Lines 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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 11 - 27
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 13 - 13
Soft-rays total 28 - 28
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total 9 - 9
Soft-rays total 14 - 18

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   24 - 24
Pelvics Attributes  
Position    
Spines     9
Soft-rays   13 - 13
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