Main Ref. | Fischer, W., M.-L. Bauchot and M. Schneider (eds.), 1987 |
Appearance refers to | |
Bones in OsteoBase | Skull, Spine |
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 | |
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 |
Type of scales | cycloid scales |
Diagnosis |
Diagnosis: head with cycloid scales above; mouth moderately protractile (Ref. 231). Vomerine teeth only anteriorly (Ref. 231), in a crescentic band (Ref. 231, 57391). Scales on interorbital space cycloid (Ref. 57391). Posterior edge of opercle finely serrated, lower edge with strong forward- directed denticles (Ref. 231). 2 flat opercular spines (Ref. 231, 57391). Young with some dark spots on upper part of body (Ref. 231). Description: elongate fish with 2 separate dorsal fins and a rather deep caudal peduncle; lower preopercular margin with large, forward-pointing spines; vomerine teeth patch not extending to midline of palate; caudal fin moderately forked; scales small, those on interorbital space cycloid (Ref. 57391). Coloration: back silvery to greyish-blue, sides silvery, belly sometimes tinged with yellow; young individuals may have some black markings, particularly on back but these disappear in adults; a diffuse black spot at upper angle of opercle (Ref. 57391). |
Ease of Identification |
Lateral Lines | 1 Interrupted: No |
Scales on lateral line | 62 - 80 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | |
Scale rows below lateral line | |
Scales around caudal peduncle | |
Barbels | 0 |
Gill clefts (sharks/rays only) | absent |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | no striking attributes |
Fins number | 2 |
Finlets No. | Dorsal 0 - 0 |
Ventral 0 - 0 | |
Spines total | 8 - 10 |
Soft-rays total | 12 - 13 |
Adipose fin | absent |
Attributes | forked; more or less normal |
Fins number | 1 |
Spines total | 3 - 3 |
Soft-rays total | 10 - 12 |
Pectoral | Attributes more or less normal |
Spines | |
Soft-rays | |
Pelvics | Attributes more or less normal |
Position thoracic before origin of D1 | |
Spines | |
Soft-rays |