Main Ref. | Kramer, B., R. Bills, P. Skelton and M. Wink, 2012 |
Appearance refers to | Male; Female |
Bones in OsteoBase |
Specialized organs | |
Different appearance | always different morphology between mature adults |
Different colors | |
Remarks | The anal fin of the mature male is broader than that of the mature female. It is inwardly indented from its anterior side. The ventral flank of the male body also in this region is curved inwards whereas that of the female is straight (Ref. 10608). |
Striking features | |
Body shape lateral | fusiform / normal |
Cross section | oval |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Type of scales | cycloid scales |
Diagnosis |
Description: Body oval shape (Ref. 91771). Head broadly rounded with a small ventrally positioned subterminal mouth, situated ventral to the eye; head and body dorsolaterally compressed (Ref. 91771). Dorsal fin origin situated about two-thirds of standard length from snout, obliquely orientated, anteriorly higher and posteriorly lower, its distal margin crescentic with anterior two or three rays longer than posterior rays; 18-22 dorsal fin rays (Ref. 91771). Anal fin longer than dorsal fin, opposite dorsal fin with slightly more anterior origin, obliquely orientated, anteriorly lower and posteriorly higher, its anterior 10 or so rays longer than posterior ones, especially in males where they also appear stronger, its margin broadly rounded and rays posterior to first 10 with distal margin straight; 25-28 anal fin rays (Ref. 91771). Scales cycloid with reticulate striae, scales extending anteriorly to operculum and pectoral fins; scales on caudal peduncle circumference (Ref. 91771). Caudal peduncle slender, subcylindrical entire length, usually 19.5-23.9% of standard length. Colour: Grey-silver, underside lighter, paired fins light and transparent, goldbrownish hue on back and tail section (Ref. 91771). In preservation it is light brown, back darker, underside fair (Ref. 91771). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 35 - 40 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | |
Scale rows below lateral line | |
Scales around caudal peduncle | 11 - 16 |
Barbels | |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | 0 - 0 |
Soft-rays total | 18 - 22 |
Adipose fin | absent |
Attributes | forked; more or less normal |
Fins number | 1 |
Spines total | 0 - 0 |
Soft-rays total | 25 - 28 |
Pectoral | Attributes |
Spines | |
Soft-rays | |
Pelvics | Attributes |
Position | |
Spines | |
Soft-rays |