Morphology Data of Chondrostoma nasus
Identification keys
Abnormalities
Main Ref. Spillman, C.-J., 1961
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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosed from congeners in Black and Caspian Sea basins by the following characters: straight mouth in individuals larger than 20 cm SL, lower lip with thick cornified sheath; dorsal fin with 9½ branched rays; anal fin with 10-11½ branched rays; scales on lateral line 52-66 (usually 60-63); eye large, diameter 50-65% of interorbital distance; and side lacking broad dark midlateral stripe. Differs from species of Chondrostoma, Protochondrostoma and Parachondrostoma in Atlantic, Adriatic and Mediterranean basins of France, Italy and Slovenia by having the following features: mouth straight, lower lip with thick cornified sheath; 27-36 gill rakers; anal fin with 10-11½ branched rays; and pectoral, pelvic, anal and caudal fins red (Ref. 59043).

(Ref. 59043). Caudal fin with 19 to 21 rays (Ref. 40476).

Ease of Identification

Meristic characteristics of Chondrostoma nasus

Lateral Lines Interrupted: No
Scales on lateral line 52 - 67
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 8 - 10
Scale rows below lateral line 4 - 6
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 27 - 36
Vertebrae
preanal
total 47 - 48

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 3 - 3
Soft-rays total 8 - 10
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 9 - 11

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   14 - 17
Pelvics Attributes  more or less normal
Position    abdominal  beneath origin of D1
Spines     2
Soft-rays   8 - 9
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