Main Ref. | Nichols, J.T. and C.M. Breder Jr., 1935 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
Striking features | |
Body shape lateral | elongated |
Cross section | |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Diagnosis |
Pectoral fins almost uniformly grayish, varying in tone but neither hyaline nor blackish, with a narrow pale posterior edge broadening at the tip and toward the axil of the fin. Predorsal scales 28-30. Ventral origin equidistant from about or behind the middle of opercle and base of caudal. Head narrow and pointed for this genus, the snout equal to or slightly longer than eye. Teeth tricuspid. Interobital slightly concave; eye slightly infralateral. Coloration: Dark above to below midline of side, pale below; dorsal very pale grayish; anal white; caudal uniform dusky; ventrals pale becoming slightly dusky in the center of their base. |
Ease of Identification |
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 | |
Barbels | |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | 13 - 17 |
Vertebrae | |
preanal | |
total |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | |
Soft-rays total | 13 - 13 |
Adipose fin |
Attributes | heterocercal; asymmetric |
Fins number | 1 |
Spines total | |
Soft-rays total | 8 - 9 |
Pectoral | Attributes transformed to 'aerofoils' |
Spines | |
Soft-rays | |
Pelvics | Attributes more or less normal |
Position abdominal before origin of D1 | |
Spines | |
Soft-rays |