Morphology Data of Polydactylus siamensis
Identification keys
Abnormalities
Main Ref. Motomura, H., Y. Iwatsuki and T. Yoshino, 2001
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Body with 7 or 8 prominent dark stripes along the scale rows above the lateral line; 7 - 9 faint stripes below (may be lost after preservation). Five pectoral filaments, moderately long, 31-43% of SL with 5th longest. Large upper jaw (mean 17% of SL) (Ref. 39886). Lateral line squamation unbranched, extending to upper end of lower caudal fin lobe. Lower tip of 7th proximal pterygiophore of 1st dorsal fin directed backward (Ref. 40970).

Ease of Identification

Meristic characteristics of Polydactylus siamensis

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 54 - 58
Scales in lateral series
Scale rows above lateral line 7 - 7
Scale rows below lateral line 10 - 11
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 13 - 14
on upper limb 9 - 10
total 22 - 24
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   15 - 15
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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