Main Ref. | Smith, C.L., 1997 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
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 | sucker-like |
Position of mouth | sub-terminal/inferior |
Type of scales | ganoid scales |
Diagnosis |
Elongate fish, pentagonal in cross section and shark-like fins (Ref. 26938). Double row of pre anal shields. Presence of a soft fontanelle. Bony shields are oval. Carina on dorsal shields do not have a conspicuous hook. Head and back bluish-black and lower surface whitish (Ref. 37032). Snout long, sharply V-shaped. 2 pairs of short, slender barbels in transverse line midway between end of snout and anterior edge of mouth (Ref. 4639). Viscera pale (Ref. 7251). Presence of 4 small scutes, usually as 2 pairs between anal fin and caudal fulcrum (Ref. 86798). |
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 | 15 - 27 |
total | |
Vertebrae | |
preanal | |
total |
Attributes | |
Fins number | 1 |
Finlets No. | Dorsal 0 - 0 |
Ventral 0 - 0 | |
Spines total | 0 - 0 |
Soft-rays total | 30 - 46 |
Adipose fin | absent |
Attributes | heterocercal; confluent |
Fins number | 1 |
Spines total | 0 - 0 |
Soft-rays total | 22 - 32 |
Pectoral | Attributes more or less normal |
Spines 0 | |
Soft-rays 40 - 41 | |
Pelvics | Attributes more or less normal |
Position abdominal before origin of D1 | |
Spines 0 | |
Soft-rays 28 - 29 |