Morphology Data of Oryzias marmoratus
Identification keys
Abnormalities
Main Ref. Kottelat, M., 1990
Appearance refers to Male; Female
Bones in OsteoBase

Sex attributes

Specialized organs other
Different appearance
Different colors always different colors between mature adults
Remarks Males have filamentous dorsal and anal fin rays; a few large external conical teeth on each jaw at the corner of the mouth; genital papilla of males is short, slightly conical, tube while that of the female is bilobed.

Descriptive characteristics of juvenile and adult

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

Distinguished from all other members of the genus by the combination of the following characters: 20-26 anal rays; 9-12 dorsal rays; 31-32 scales in lateral row; body depth 25-31% SL; and color pattern of male in life with greyish brown head and body with diffuse dark brown blotches irregularly dispersed on body and always with a row of 5-9 larger blotches more or less irregularly organized above axial stripe (Ref. 26687).

Ease of Identification

Meristic characteristics of Oryzias marmoratus

Lateral Lines Interrupted: No
Scales on lateral line 31 - 32
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
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 9 - 12
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 20 - 26

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   10 - 10
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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