Morphology Data of Hapalogenys filamentosus
Identification keys
Abnormalities
Main Ref. Iwatsuki, Y. and B.C. Russell, 2006
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 short and / or deep
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales ctenoid scales
Diagnosis

Distinguished from other congeners by the following combination of characters: lower lip fleshy with dense cluster of very short papillae, scaly posteriorly (on posterior abdominal part of angular of lower jaws); presence of 10 unobstructed pores on and behind chin; maxilla without scales; body with 2 faint longitudinal dark stripes, 1st from nape to base of mid dorsal-fin soft rays, 2nd from eye to base of last dorsal-fin soft ray, their width below base of 5th and 6th dorsal-fin spines clearly narrower than pupil diameter in 6.5-15.8 cm SL; soft rayed portions of dorsal and anal fins somewhat rounded posteriorly and slightly angulated posteriorly, respectively; pelvic-fin tip almost reaching to or slightly beyond base of 1st anal-fin spine when depressed; pored lateral-line scales 41 or 42; a procumbent spine-like process (exposed tip of 1st pterygiophore) apparent at origin of dorsal fin but covered by predorsal scales (Ref. 76777).

Ease of Identification

Meristic characteristics of Hapalogenys filamentosus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 41 - 42
Scales in lateral series
Scale rows above lateral line 10 - 11
Scale rows below lateral line 20 - 22
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 11 - 12
on upper limb 5 - 5
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 11 - 11
Soft-rays total 14 - 14
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total 3 - 3
Soft-rays total 9 - 9

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   17 - 18
Pelvics Attributes  
Position    abdominal  behind origin of D1
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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