Morphology Data of Polysteganus lineopunctatus
Identification keys
Abnormalities
Main Ref. Iwatsuki, Y. and P.C. Heemstra, 2015
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 flattened
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its by the following set of characters: scale rows above lateral line 7½ and between 5th dorsal-fin spine base and lateral-line 5½; pored lateral-line scales 53-55; suborbital depth obviously less than or subequal to orbit diameter; dorsal-fin rays reddish pink or orangish red but with deep yellow upper margin of dorsal-fin rays; distinct irregular lines of blue spots on body 7 or 8 (often present even in preserved specimens); pale reddish yellow membranes on caudal-fin lobes and caudal fin with hyaline white margin on lower fin lobe; without blue iridescence on dorsal and lateral side of whitish pink body; canines are somewhat smaller, only upper canines visible when mouth closed; slender body, 40-43% (mean 42%) of SL; without bony bulge before and above eye even in larger specimens of over 25 cm TL; caudal fin is moderately forked (Ref. 106993).

Ease of Identification

Meristic characteristics of Polysteganus lineopunctatus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 54 - 55
Scales in lateral series
Scale rows above lateral line 7.5 - 7.5
Scale rows below lateral line 15.5 - 16.5
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 12 - 12
on upper limb 6 - 7
total 18 - 19
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 12 - 12
Soft-rays total 10 - 10
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 8 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   15 - 16
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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