Main Ref. | Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | no special organs |
Different appearance | males alike females |
Different colors | males alike females |
Remarks |
Striking features | striking fins |
Body shape lateral | elongated |
Cross section | compressed |
Dorsal head profile | clearly convex |
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 |
Body tapering, belly rounded before pelvic fins, with 18 to 20 + 34 to 36 = 54 or 55 keeled scutes from isthmus to anus. Maxilla short, not reaching to edge of gill cover. Pectoral fin with 6 long filaments and 11 (rarely 12) branched fin rays, longer than those of pelvic fin. Anal fin long, the last fin ray joined to the caudal fin, which is small and pointed. |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 0 - 0 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | 0 - 0 |
Scale rows below lateral line | 0 - 0 |
Scales around caudal peduncle | |
Barbels | 0 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | 21 - 24 |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal 0 - 0 |
Ventral 0 - 0 | |
Spines total | 0 - 0 |
Soft-rays total | |
Adipose fin | absent |
Attributes | pointed |
Fins number | 1 |
Spines total | 0 - 0 |
Soft-rays total | 80 |
Pectoral | Attributes rays very elongated |
Spines 0 | |
Soft-rays 17 - 18 | |
Pelvics | Attributes more or less normal |
Position abdominal before origin of D1 | |
Spines 0 | |
Soft-rays 7 - 7 |