Main Ref. | Whitehead, P.J.P., 1985 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | no special organs |
Different appearance | males alike females |
Different colors | males alike females |
Remarks |
Striking features | none |
Body shape lateral | fusiform / normal |
Cross section | compressed |
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 | terminal |
Diagnosis |
Diagnosis: Body somewhat compressed, moderately deep with depth at pectoral fin less than head length, scutes apparent along belly (Ref. 188). Upper jaw notched, lower jaw fitting into it; no teeth on vomer; gillrakers fairly short and stout, total 30 to 80, longer than gill filaments (Ref. 188). A dark spot posterior to gill opening, followed by 7 or 8 similar spots along flank, but sometimes faint or absent (Ref. 188, 40476). Alosa fallax resembles Alosa alosa, which has more and longer gillrakers and at most only 3 dark spots on flank (Ref. 188). Description: Gillrakers fairly short and stout, total 30 to 80, longer than gill filaments (Ref. 188). Large, thin scales (Ref. 51442). Colouration: Deep blue dorsally, becoming greenish brown or golden on the sides and silvery ventrally; usually a series of 4-8 black blotches behind gill opening, sometimes a single blotch (Ref. 188, 59043, 88187). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 54 - 71 |
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 | 30 - 80 |
Vertebrae | |
preanal | |
total | 49 - 59 |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | 4 - 6 |
Soft-rays total | 12 - 16 |
Adipose fin | absent |
Attributes | forked; more or less normal |
Fins number | 1 |
Spines total | 3 - 4 |
Soft-rays total | 16 - 22 |
Pectoral | Attributes more or less normal |
Spines 1 | |
Soft-rays 13 - 16 | |
Pelvics | Attributes more or less normal |
Position abdominal beneath origin of D1 | |
Spines 1 | |
Soft-rays 8 - 9 |