Morphology Summary - Ariosoma indicum
Morphology Data of Ariosoma indicum
Identification keys
Abnormalities
Main Ref. Kodeeswaran, P., A. Kathirvelpandian, S. Acharya, S.R. Mohanty, A. Mohapatra, T.T.P. Ajith Kumar and K.K. Lal, 2022
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 elongated eel species is distinguished from al its congeners by the following set of characters: anus on the anterior to the midpoint of the total length, pre-anal length 40.0-43.1% of TL; dorsal-fin origin before the pectoral-fin base; short wedge-shaped pointed vomerine teeth patch, three or four rows in the anterior portion, tapering posteriorly with four uniserial teeth; intermaxillary teeth with four transverse rows, barely visible when jaws closed and a fine gap separates vomerine and maxillary teeth; lateral line pores end at a smaller distance (3.8-4.6 in HL) before the tail tip; SO canal with 4 or 5 pores; pre-dorsal vertebrae 9-10; preanal vertebrae 49-53; total vertebrae 141-146. Colouration: body greenish-brown in colour; two faint dark bands at dorsal portion of the head, extremities of the lower jaw with minute dark pigmentation patches before the rictus, bicoloured pectoral fin. (Ref. 130193).

Ease of Identification

Meristic characteristics of Ariosoma indicum

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 49 - 53
total 141 - 146

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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