Morphology Data of Acipenser brevirostrum
Identification keys
Main Ref. Bigelow, H.B., M.G. Bradbury, J.R. Dymond, J.R. Greeley, S.F. Hildebrand, G.W. Mead, R.R. Miller, L.R. Rivas, W.L. Schroeder, R.D. Suttkus and V.D. Vladykov, 1963
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features other (see remarks)
Body shape lateral elongated
Cross section angular
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout upper jaw greatly elongated
Position of mouth sub-terminal/inferior
Type of scales ganoid scales

Snout short, bluntly V-shaped, not upturned at tip. Barbels short (Ref. 7251). Absence of fontanelle and post dorsal shields. Single row of pre anal shields, 6-11 (Ref. 4639). Dorsal shields 7-13, lateral shields 22-34 (Ref. 4639). Blackish viscera (Ref. 37032). Head and back dark, lower surface white (Ref. 37032). Anal fin origin beneath dorsal fin origin (Ref. 86798).

Ease of Identification

Meristic characteristics of Acipenser brevirostrum

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb 22 - 32


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 33 - 42
Adipose fin absent

Caudal fin

Attributes heterocercal; confluent

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 18 - 24

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   30 - 31
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     0
Soft-rays   17 - 21
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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