Main Ref. | Teugels, G.G., 1986 |
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 | elongated |
Cross section | circular |
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 | sub-terminal/inferior |
Type of scales | scales embedded or partly/completely absent |
Diagnosis |
Diagnosis: body extremely elongate (depth 9.3-13.3% SL, mean 11.0); 9-12 rakers on first gill arch (Ref. 81644). Head rounded in dorsal outline (Ref. 248), rather short (HL 18.3-22.8% SL, mean 20.2) and wide (width 14.1-17.0% SL, mean 15.4)(Ref. 81644). Snout broadly rounded (Ref. 248). Eyes small and laterally placed (Ref. 248). Interorbital width large (45.4-50.7% HL, mean 47.7)(Ref. 81644). Postorbital margin not entirely covered with bone; frontal fontanelle long and narrow; occipital fontanelle long and oval-shaped; supra-orbital and "dermosphenotic" bones separated; tooth plates relatively broad; pectoral spine straight (Ref. 248). Pectoral spine slightly serrate on its anterior face, with serrations downward oriented (Ref. 248, 81644). Gill rakers relatively long and distantly set; suprabranchial organ well developed (Ref. 248). Openings of secondary sensory canals show a regular pattern (Ref. 248, 81644). Coloration: preserved specimens with uniform colouration; back, flanks and upper parts of paired fins dark brown to reddish brown; ventrum and lower parts of paired fins pale brown to beige (Ref. 81644). |
Ease of Identification |
Lateral Lines | 1 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 | 0 |
Gill clefts (sharks/rays only) | absent |
Gill rakers | |
on lower limb | |
on upper limb | |
total | 9 - 12 |
Vertebrae | |
preanal | |
total | 60 - 63 |
Attributes | extending over most of the back length |
Fins number | 1 |
Finlets No. | Dorsal 0 |
Ventral 0 | |
Spines total | 0 - 0 |
Soft-rays total | 74 - 85 |
Adipose fin | absent |
Attributes | more or less truncate; more or less normal |
Fins number | 1 |
Spines total | |
Soft-rays total | 61 - 71 |
Pectoral | Attributes more or less normal |
Spines 1 | |
Soft-rays 8 - 9 | |
Pelvics | Attributes more or less normal |
Position abdominal behind origin of D1 | |
Spines | |
Soft-rays 6 |