Morphology Data of Batasio affinis
Identification keys
Abnormalities
Main Ref. Ng, H.H. and M. Kottelat, 2001
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
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Greyish brown body with a dark brown predorsal oblique bar and a dark brown spot on the side of the body below the adipose fin, dark brown band on distal half of dorsal fin. Dorsal-spine length 14.0% SL; body depth at anus 18.0% SL; snout length 36.0% HL; eye diameter 24.4% HL; interorbital distance 31.7% HL (Ref. 44354).

Ease of Identification

Meristic characteristics of Batasio affinis

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

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 1 - 1
Soft-rays total 6 - 6
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 12 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   8 - 8
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   6 - 6
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