Morphology Data of Arius arenarius
Identification keys
Abnormalities
Main Ref. Kailola, P.J., 1999
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 elongated
Cross section
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales
Diagnosis

Head shield extensive and very granular. Lateral line turns upwards only at the tail base. Gill rakers present on hind aspect of all gill arches. Maxillary barbel short, 20 - 24% of SL. Caudal peduncle depth 1.9 - 2.4 in its length (Ref. 38478).

Ease of Identification

Meristic characteristics of Arius arenarius

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
total
Vertebrae
preanal
total 17 - 17

Fins

Dorsal fin(s)

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

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     0
Soft-rays   
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