Morphology Data of Thrissina chefuensis
Chiavi di identificazione
Abnormalities
Main Ref. Hata, H., N.V. Quan, T.M. Ha and H. Motomura, 2020
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
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosi

This species is distinguished by the following set of characters: the upper jaw is short, posterior tip not reaching posterior margin of preopercle; first supramaxilla is long and narrow; branched rays of dorsal fin 10-11 (modally 11), of anal fin 24-30 (28) and of the pectoral fin 11-12 (12); transverse scales 9; scale rows in longitudinal series 33-35 (34); gill rakers on first gill arch, in upper series 23-27 (23), lower series 27-31 (28), total 50-57 (51); gill rakers on second gill arch, in upper series 17-20 (19), lower series 26-32 (29), total 44-52 (48); gill rakers on third gill arch, in upper series12-17 (15), lower series 15-19 (16), total 29-35 (31); gill rakers on fourth gill arch, in upper series 11-13 (12), lower series 12-15 (14), total 23-27 (26); gill rakers on posterior face of third gill arch 5-8 (8); body is rather elongate, its depth 21.9-26.0% (mean 23.8%) SL; distance between the origins of dorsal and anal fins 26.1-30.2% (28.3%) SL; caudal peduncle is rather short and narrow, its length 7.7-10.4% (9.0%) SL and depth 8.8-10.6% (9.8s%) SL (Ref. 123269).

Ease of Identification

Meristic characteristics of Thrissina chefuensis

Lateral Lines 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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
totale
Vertebre
preanal
totale

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   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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