Morphology Data of Genyagnus monopterygius
Identification keys
Main Ref. Kishimoto, H., 2001
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

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

Head and anterior body depressed. Body scales minute, randomly arranged. Pectoral fins with "squarish" appearance, dorsoposterior margin straight, middle ray longest. A mental barbel present on chin. Respiratory valve inside lower jaw with a dermal appendage expanded vertically in young, without appendage in adults. Both lips with labial fimbriae. Lower portion of body without dermal folds originating from anal fin rays (Ref 42788).

Ease of Identification

Meristic characteristics of Genyagnus monopterygius

Lateral Lines 1 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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total 0 - 4
Soft-rays total 16 - 20
Adipose fin

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total 15 - 19

Paired fins

Pectoral Attributes  
Soft-rays   13 - 20
Pelvics Attributes  
Spines     1
Soft-rays   5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Yap, Sheryl
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17