Morphology Data of Acipenser sturio
Identification keys
Abnormalities
Main Ref. Bauchot, M.-L., 1987
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance always different morphology between mature adults
Different colors males alike females
Remarks

Descriptive characteristics of juvenile and adult

Striking features striking type of mouth
Body shape lateral elongated
Cross section
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 sub-terminal/inferior
Type of scales ganoid scales
Diagnosis

Body elongated, pentagonal section (Ref. 51442). Snout moderate with tip narrow and pointed (Ref. 3397), mouth inferior (Ref. 59043). Lower lip not continuous, interrupted at center (Ref. 3397). Four barbels halfway between snout tip and mouth but not reaching the latter (Ref. 3397, Ref. 51442). No scales, but 5 rows of scutes on the body: dorsal 9-16, lateral 24-39 on each side, ventral 9-14 on each side, with dense cross-lines of smaller rhombic plates between the dorsal and lateral rows (Ref. 2196, Ref. 3397, Ref. 40476, Ref. 51442). Dorsal side greenish-brown to blackish with golden tints, flanks light with silvery tints, belly white (Ref. 3397).

Ease of Identification

Meristic characteristics of Acipenser sturio

Lateral Lines Interrupted: No
Scales on lateral line 0 - 0
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 0 - 0
Scale rows below lateral line 0 - 0
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 18 - 25
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 30 - 44
Adipose fin absent

Caudal fin

Attributes heterocercal; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 23 - 30

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   36 - 40
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     0
Soft-rays   26 - 30
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Luna, Susan M.
Modified by Bailly, Nicolas
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17