Morphology Summary - Ariosoma thoothukudiense
Morphology Data of Ariosoma thoothukudiense
Identification keys
Abnormalities
Main Ref. Kodeeswaran, P., A. Kathirvelpandian, A. Mohapatra and T.T.A. Kumar, 2024
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  (shape guide)
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its congeners by the following set of characters: anus at mid-point of total length, preanal length 48.7-49.1% of TL; dorsal-fin origin is just before pectoral-fin insertion; vomerine teeth patch short with four rows with pointed teeth in anterior portion, tapering posteriorly with two or three rows of blunt teeth followed by three uniserial teeth posteriorly; intermaxillary teeth with five transverse rows, barely visible when mouth is closed and separated from vomerine and maxillary by fine gap; SO canal with 6 pores; vertebrae with pre-dorsal 10-11, pre-anal 61-64 and total 162-163. Colouration: body bicoloured, pale brown dorsally and silvery white ventrally; the preopercular portion is dark; pectoral fin reddish with dark spot at base (Ref. 132579).

Ease of Identification

Meristic characteristics of Ariosoma thoothukudiense

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 61 - 64
total 162 - 163

Fins

Dorsal fin(s)

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

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
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